Complete glossary
A–Z index
All 250 terms, alphabetically.
A
- Accumulator (Acca)An accumulator is the British term for a parlay. Several selections combined into one bet, with the odds multiplied and every leg required to win. Four or more selections is the usual threshold for the name.Sports Betting
- ActionAction means betting activity. Either the total money wagered on a market, or whether a specific bet stands. A bet that has action is live; one that does not has been voided.Core Wagering
- Affordability CheckAn affordability check is an operator's assessment of whether a customer can sustain their level of gambling, sometimes requiring financial documents. It is a licence obligation in several markets and is contested by both industry and players.Compliance & Safer Gambling
- All-InGoing all-in means betting every chip you have. You can only win the portion of the pot you matched, with any excess forming a side pot contested by the remaining players.Poker
- American Odds (Moneyline Odds)American odds use a baseline of 100. A positive number is the profit on a $100 stake (+250 wins $250). A negative number is the stake needed to win $100 (-150 means risking $150 to win $100).Odds & Probability
- Annuity vs Lump SumLottery jackpot winners usually choose between annual payments over decades or a single immediate cash payment worth 50% to 60% of the advertised figure. The advertised jackpot is almost always the annuity total.Lottery
- AnteAn ante is a small forced bet contributed by every player before a hand, in addition to the blinds. It increases the pot and pressures players into contesting more hands.Poker
- Ante-Post BettingAnte-post bets are placed well before an event, typically in horse racing, at prices longer than will be available on the day. The crucial risk is that if your selection does not run, you lose your stake entirely.Sports Betting
- Anti-Money Laundering (AML)AML is the legal framework requiring gambling operators to detect and prevent criminal funds passing through their business. It is why identity checks, source-of-funds requests and transaction monitoring exist.Compliance & Safer Gambling
- Arbitrage Betting (Arbing)Arbitrage betting means backing every outcome of an event across different bookmakers at prices that guarantee a profit whatever happens. It works, the margins are tiny, and accounts that do it are restricted quickly.Sports Betting
- Asian HandicapAsian handicap removes the draw from football betting by applying fractional goal handicaps. Quarter-goal lines split your stake across two handicaps, which is why these bets can win or lose only half.Sports Betting
- Auction DraftIn an auction draft every manager has a budget and bids on players, so anyone can acquire any player. It removes the constraint of draft position and is generally considered more skill-intensive than a snake draft.Fantasy Sports
- AutoplayAutoplay spins a slot repeatedly without further input, until a set number of spins or a stop condition is reached. Several regulators have restricted or banned it because removing the decision to continue is associated with increased harm.Slots
B
- BaccaratBaccarat is a card game where you bet on which of two hands, Player or Banker, will score closer to nine. The Banker bet has a 1.06% house edge, among the lowest in any casino, and no decisions are involved.Casino & Table Games
- Back BetA back bet is a conventional wager on something to happen. The term exists mainly to distinguish it from a lay bet on an exchange, where you can also bet on something not to happen.Sports Betting
- Bad BeatA bad beat is losing a hand you were heavily favoured to win, usually to an unlikely card on the river. They are statistically inevitable and say nothing about the quality of the decision that led to them.Poker
- BankrollA bankroll is the money set aside specifically for gambling, kept separate from money you need for anything else. Its purpose is to make the size of any individual bet a deliberate decision rather than a reaction.Core Wagering
- Bankroll ManagementBankroll management is the practice of sizing every bet as a fixed fraction of your total gambling funds, so that no losing run can wipe you out and no winning run tempts you into bets you would not normally place.Core Wagering
- Basic StrategyBasic strategy is the mathematically optimal decision for every blackjack hand against every dealer upcard. It reduces the house edge to around 0.5% and is the single most valuable thing to learn in a casino.Casino & Table Games
- Best Odds GuaranteedBest odds guaranteed pays you at the starting price if it is longer than the price you took. It is one of the few promotions with genuinely positive expected value, and it is largely confined to horse and greyhound racing.Sports Betting
- BetA bet is an agreement to risk money on an outcome, at agreed odds, settled when the outcome is known. It is the basic unit of gambling and the thing every other term on this site ultimately describes.Core Wagering
- Bet BuilderA bet builder is the interface that lets you construct a same game parlay by selecting multiple outcomes from one fixture. It is the European name for the same product American books call an SGP.Sports Betting
- Bet CreditsBet credits are sportsbook promotional funds that work like free bets. The stake is not returned with winnings. They cannot be withdrawn and must be used within an expiry period.Bonuses & Promotions
- Bet LevelBet level is a multiplier applied to your coin size on some slots, determining how many coins are staked per payline. Total stake is coin size multiplied by bet level multiplied by lines.Slots
- Betting ExchangeA betting exchange matches bettors against each other rather than against a bookmaker, charging commission on net winnings. Prices are better, you can bet on outcomes not to happen, and winning accounts are not restricted.Sports Betting
- Betting WindowThe betting window is the short period in a live casino round during which bets can be placed, typically 10 to 20 seconds. Once it closes, no further bets are accepted for that round.Live Casino
- BingoBingo is a game where players mark numbers on tickets as they are drawn, winning by completing a set pattern. Prizes come from the pooled ticket money after the operator's cut, so your odds depend entirely on how many tickets are in play.Bingo
- Bingo PatternA bingo pattern is the specific arrangement of marked squares required to win a 75-ball game. The pattern is announced before play and varies between games within a session.Bingo
- Bingo TicketA bingo ticket is the card of numbers you play with. Buying more tickets increases your share of the prize pool proportionally but does not improve the value of the bet.Bingo
- BlackjackBlackjack is a card game where you aim to beat the dealer's hand without exceeding 21. Played with correct strategy under good rules it has a house edge around 0.5%, the lowest of any common casino game.Casino & Table Games
- Blackout (Coverall)A blackout requires marking every number on a 75-ball bingo card. It is the hardest pattern and carries the largest prize, usually with a jackpot attached for completing it within a set number of calls.Bingo
- BlindBlinds are forced bets posted before cards are dealt, ensuring every hand has money to compete for. The small and big blind rotate clockwise so the cost is shared equally.Poker
- Bonus AbuseBonus abuse is the operator's term for extracting value from promotions in ways the terms prohibit. It covers genuine fraud like multiple accounts, and also legitimate techniques like matched betting.Bonuses & Promotions
- Bonus BallA bonus ball is an extra number drawn after the main numbers, used to determine secondary prize tiers. Matching five main numbers plus the bonus ball typically pays far more than matching five alone.Lottery
- Bonus Buy (Feature Buy)Bonus buy lets you pay a fixed multiple of your stake, typically 70x to 100x, to enter a slot's bonus round immediately. It is banned in several regulated markets, including the UK.Slots
- Bonus CodeA bonus code is a string entered during registration or deposit to claim a specific offer. Codes are usually tied to affiliate tracking, and entering the wrong one, or none, can forfeit the offer permanently.Bonuses & Promotions
- Bonus ExpiryBonus expiry is the deadline for meeting wagering requirements. Unfinished bonuses are removed at expiry along with any winnings derived from them, regardless of how close you were.Bonuses & Promotions
- Bonus RoundA bonus round is a feature within a slot that pays differently from the base game. Most of a modern slot's return is concentrated here, which is why the base game often feels so unrewarding.Slots
- BookmakerA bookmaker is a business that sets odds, accepts bets and pays out winners, profiting from the margin built into its prices rather than from predicting results correctly.Core Wagering
- BustTo bust is to exceed 21 in blackjack, losing the hand immediately. Because the player acts first, a player bust loses even if the dealer would also have busted, which is the source of the house edge.Casino & Table Games
C
- Card CountingCard counting tracks the ratio of high to low cards remaining in a blackjack shoe, allowing a player to raise bets when the deck favours them. It is legal, it works, and casinos are entitled to ban you for it.Casino & Table Games
- Cascading ReelsCascading reels remove winning symbols and drop new ones into the gaps, allowing chains of consecutive wins from a single spin. Rising multipliers during a cascade are where the largest wins usually come from.Slots
- Cash GameA DFS cash game pays roughly the top half of entrants a similar amount, rather than concentrating prizes at the top. Strategy prioritises consistency over upside, and the correct lineup differs sharply from a tournament lineup.Fantasy Sports
- Cash OutCash out lets you settle a bet before the event finishes, taking a payout based on its current position. The offer always includes a margin, so cashing out is on average worse than letting the bet run.Sports Betting
- CashbackCashback returns a percentage of losses over a period, usually as bonus funds with wagering requirements attached. Real-cash cashback with no strings exists but is much rarer.Bonuses & Promotions
- CasinoA casino is a venue or platform offering games of chance where the operator holds a mathematical edge on every game. That edge, applied across enough bets, is the entire business model.Casino & Table Games
- Chat Moderator (CM)A chat moderator hosts an online bingo room, running chat games, welcoming players and enforcing conduct rules. They are the main reason online bingo retains players better than most gambling products.Bingo
- ChipA chip is a token representing money at a casino table. Converting cash into chips is a deliberate psychological step. Chips are demonstrably easier to bet than the equivalent banknotes.Casino & Table Games
- ChurnChurn has two meanings in gambling. For operators it is the rate at which customers stop playing. For players it describes the same money being wagered repeatedly, generating turnover far larger than the original deposit.Core Wagering
- Closing Line Value (CLV)Closing line value measures whether the price you took was better than the final price before the event started. Consistently positive CLV predicts long-term profitability far more reliably than your win rate does.Odds & Probability
- Cluster PaysCluster pays awards wins for groups of matching symbols touching horizontally or vertically, rather than along paylines. A cluster of five or more adjacent symbols typically pays.Slots
- Coin SizeCoin size is the value of a single credit staked per payline on a slot. It is the smallest component of the bet and is multiplied by bet level and payline count to give the total stake.Slots
- Come BetA come bet works exactly like a pass line bet but can be placed after a point is established, letting you have several numbers working at once. It carries the same 1.41% house edge and the same zero-edge odds option.Casino & Table Games
- CompA comp is a complimentary benefit given to players based on how much they wager. Drinks, meals, rooms or cashback. It is calculated from theoretical loss, not actual loss, so winning does not reduce it.Casino & Table Games
- CrapsCraps is a dice game with an unusually wide range of bets, from a 1.41% house edge on the pass line to nearly 17% on some proposition bets. It also contains the only zero-edge bet in a casino.Casino & Table Games
- Crazy TimeCrazy Time is a live money wheel game with four bonus rounds, produced by Evolution. House edge ranges from about 3.6% on the number bets to over 5% on the bonus segments.Live Casino
- Curacao eGaming LicenseA Curacao licence is the cheapest and historically weakest major gambling licence. A 2023 reform replaced the old master-licence system with direct licensing, though protections remain far below European regulators.Compliance & Safer Gambling
D
- Daily Fantasy Sports (DFS)DFS contests last a single day or week rather than a season. Players build a lineup under a salary cap and compete for prize pools, with the operator taking a rake of around 10%.Fantasy Sports
- Daily Login BonusA daily login bonus credits free currency for opening the app each day, often increasing with consecutive logins. It is the primary free route to Sweeps Coins and the main retention mechanic in social gaming.Sweepstakes & Social Casino
- DauberA dauber is the ink marker used to blot numbers on a paper bingo ticket. Online play replaces it with auto-daub, which marks numbers automatically and removes the tracking element entirely.Bingo
- Dead HeatA dead heat is a tie for a position that cannot be separated. Payouts are divided proportionally: in a two-way dead heat for a place, you are paid half your stake at full odds and lose the other half.Sports Betting
- Decimal OddsDecimal odds show the total return per unit staked, including the stake itself. Odds of 3.50 return £3.50 for every £1 bet. £2.50 profit plus your £1 back.Odds & Probability
- Deposit LimitA deposit limit caps how much you can pay into a gambling account over a period. Decreases apply immediately while increases are subject to a cooling-off delay, which is what makes the tool effective.Compliance & Safer Gambling
- Deposit MatchA deposit match credits bonus funds as a percentage of what you deposit. A 100% match on £100 gives £100 in bonus money, which is subject to wagering requirements before it can be withdrawn.Bonuses & Promotions
- DeviggingDevigging is removing the bookmaker's margin from a set of odds to recover the market's honest probability estimate. It converts a price that implies 52.4% into the roughly 50% the book actually believes.Odds & Probability
- Double DownDoubling down means doubling your bet in exchange for exactly one more card. It is the main way a blackjack player wins money back from the house, and failing to use it correctly is expensive.Casino & Table Games
- DrawA draw is the event in which lottery numbers are selected, either by a physical machine or a certified random number generator. Past draws carry no information about future ones.Lottery
- Dual-Currency ModelThe dual-currency model uses two separate virtual currencies: one purchasable and non-redeemable, one free and redeemable for prizes. It is the legal mechanism that allows sweepstakes casinos to operate outside gambling law.Sweepstakes & Social Casino
E
- e-WalletAn e-wallet is a digital payment account like PayPal, Skrill or Neteller, used as an intermediary between your bank and a gambling site. They offer the fastest withdrawals and are frequently excluded from bonus eligibility.Compliance & Safer Gambling
- Each-Way BetAn each-way bet is two bets in one: half your stake on the selection winning, half on it finishing in the places. A £10 each-way bet costs £20 and pays out if the selection wins or merely places.Sports Betting
- En PrisonEn Prison holds your even-money bet for one more spin when zero lands, rather than losing it. Win the next spin and the stake is returned; it halves the house edge on those bets to 1.35%.Casino & Table Games
- Even MoneyEven money is a price where you win exactly what you stake. Written as 1/1, 2.00 or +100, it implies a 50% chance before any bookmaker margin is considered.Odds & Probability
- ExactaAn exacta is a bet on the first two finishers in the exact order. It is harder than picking a winner and pays considerably more, but carries a much higher takeout in pool betting.Horse & Greyhound Racing
- Expanding WildAn expanding wild grows to fill its entire reel, turning every position on that reel wild. Landing them on multiple reels can complete every payline at once.Slots
- Expected Value (EV)Expected value is the average outcome of a bet if it could be repeated indefinitely. Positive EV means the bet gains money over time; negative EV means it loses. Almost every bet available in a casino is negative EV by design.Core Wagering
F
- Favourite (Favorite)The favourite is the selection with the shortest odds in a market, meaning the bookmaker rates it most likely to win. Favourites win roughly a third of horse races and are generally better value than their reputation suggests.Odds & Probability
- Fixed JackpotA fixed jackpot is a top prize of a set amount, usually expressed as a multiple of stake, that does not grow over time. It is funded within the normal game maths rather than by a separate contribution.Slots
- FlopThe flop is the first three community cards dealt face up in Hold'em and Omaha. It is the single most informative moment in a hand, revealing five of the seven cards a Hold'em player will ultimately use.Poker
- Fractional OddsFractional odds show profit relative to stake. 5/1 means five units of profit for every one staked; 5/2 means five profit for every two staked. Your stake is returned separately on top.Odds & Probability
- Free BetA free bet is a sportsbook credit that stakes without your own money, returning only the winnings and not the stake. A £20 free bet at even money returns £20, not £40.Bonuses & Promotions
- Free SpinsFree spins are bonus rounds awarded by scatters or promotions, played without deducting from your balance. On most modern slots the majority of the game's total return is concentrated inside them.Slots
- Free Sweeps CoinsFree Sweeps Coins are redeemable sweepstakes currency obtained without purchase, through daily logins, promotions or postal request. Their availability is what allows the sweepstakes model to exist legally.Sweepstakes & Social Casino
- FreerollA freeroll is a poker tournament with no entry fee but real prizes. It also describes a situation where you cannot lose a hand but might win it outright.Poker
- Full HouseA full house is marking every number on a bingo ticket, the top prize in 90-ball bingo. It typically takes between 55 and 75 calls and accounts for most of the prize pool.Bingo
- Futures BetA futures bet is placed on an outcome that will be decided at the end of a season or tournament, such as a league winner. Your money is tied up for months and the margins are among the highest in sports betting.Sports Betting
G
- Gamble FeatureA gamble feature offers a double-or-nothing bet on a win you have just collected, usually by guessing a card colour. It is typically close to a fair coin flip but not quite, and it adds volatility without adding value.Slots
- Game Show GameA game show game is a live casino product styled as a television game show, with a presenter, a large wheel and bonus rounds. They carry noticeably higher house edges than classic table games.Live Casino
- Game WeightingGame weighting determines how much each game contributes toward a wagering requirement. Slots usually count 100% while table games count 10% or less, which multiplies the real requirement on low-edge games.Bonuses & Promotions
- Gaming LicenseA gaming licence is regulatory authorisation to operate gambling. What it actually guarantees varies enormously by jurisdiction. The strongest licences enforce fund segregation and dispute resolution, the weakest verify little.Compliance & Safer Gambling
- GamStopGamStop is the UK's national online self-exclusion scheme. One registration blocks you from every operator licensed by the Gambling Commission for six months, one year or five years.Compliance & Safer Gambling
- Geolocation VerificationGeolocation verification confirms you are physically within a jurisdiction where the operator is licensed. It is mandatory in US regulated markets and uses multiple signals rather than IP address alone.Compliance & Safer Gambling
- Gold CoinsGold Coins are the purchasable, non-redeemable currency at a sweepstakes casino. They have no cash value and exist so that money changing hands is a purchase of entertainment rather than a wager.Sweepstakes & Social Casino
- Gross Gaming Revenue (GGR)GGR is total amount wagered minus total winnings paid out. The operator's revenue before costs. It is the figure most gambling taxes and licence fees are calculated on.Core Wagering
- Guaranteed Prize Pool (GPP)A GPP is a DFS tournament with a prize pool guaranteed regardless of how many enter. Payouts are heavily top-weighted, so most entrants win nothing and the winner takes a large share.Fantasy Sports
H
- Handicap BettingHandicap betting applies a virtual advantage or deficit to a team before the match starts, evening out a mismatch. It is the European term for what American books call the point spread.Sports Betting
- HandicapperA handicapper is either a bettor who analyses events to find value, or an official who assigns weights to horses in a race. The two meanings are unrelated and context makes clear which is intended.Sports Betting
- HandleHandle is the total amount wagered with a sportsbook or casino over a period, before any winnings are paid out. It is the industry's headline volume figure and is much larger than actual revenue.Core Wagering
- Head-to-Head ContestA head-to-head contest pits your lineup against one opponent, with the winner taking both entry fees less rake. It is the lowest-variance DFS format and the most directly comparable to a single bet.Fantasy Sports
- HedgingHedging means placing an additional bet against your original position to reduce risk or lock in profit. It usually costs expected value, and is worth doing when the size of the position has become the problem.Sports Betting
- HitTo hit is to request another card in blackjack. You can hit as many times as you like until you stand or exceed 21, at which point you bust and lose immediately.Casino & Table Games
- Hit FrequencyHit frequency is the percentage of spins that return anything at all. A 25% hit frequency means one spin in four pays, though many of those pay less than the stake.Slots
- Hold and WinHold and win is a bonus format where cash-value symbols lock in place and respins continue until no new symbols land. Every new symbol resets the respin counter, which is what makes the mechanic so effective.Slots
- Hold PercentageHold percentage is the share of total money wagered that an operator actually keeps after paying out winners. It is the realised version of the theoretical house edge, and in sports betting it is usually higher than the theoretical margin suggests.Core Wagering
- House EdgeThe house edge is the percentage of every bet the operator expects to keep over the long run. A 2.7% house edge on European roulette means that for every £100 staked, the casino expects to retain £2.70. Permanently, and regardless of how any individual session goes.Core Wagering
- House RulesHouse rules are the specific variations a casino applies to a game, and they change the house edge significantly. Two blackjack tables in the same building can differ by more than a full percentage point.Casino & Table Games
I
- Implied ProbabilityImplied probability is the chance of an outcome suggested by its odds. Divide 1 by decimal odds: a price of 4.00 implies 25%. It always overstates the real probability, because the bookmaker's margin is built in.Odds & Probability
- In-Play BettingIn-play betting means wagering on an event while it is happening, with odds updating continuously. It is the largest growth area in sports betting and carries higher margins and a built-in delay that works against the bettor.Sports Betting
- Inside BetAn inside bet in roulette covers one or a few specific numbers on the main grid, paying between 35:1 and 5:1. It has the same house edge as any other roulette bet, with far higher volatility.Casino & Table Games
- Instant Win GameAn instant win game reveals whether you have won immediately rather than at a scheduled draw. Prizes are predetermined and distributed across a finite print run, so the odds are fixed before any ticket is sold.Lottery
- InsuranceInsurance is a side bet offered when the dealer shows an ace, paying 2:1 if they have blackjack. It carries a house edge of about 7% and should essentially never be taken.Casino & Table Games
J
K
- KenoKeno is a draw game where you pick numbers from a field of 80 and are paid according to how many match the 20 drawn. House edges run from 20% to 35%, among the worst in any casino.Lottery
- KYC (Know Your Customer)KYC is the identity verification operators must perform on customers. It is a legal obligation rather than an operator preference, and completing it before you want to withdraw avoids the delay most people experience.Compliance & Safer Gambling
L
- La PartageLa Partage returns half your even-money stake when the ball lands on zero. It halves the house edge on those bets from 2.70% to 1.35%, making French roulette the best version of the game.Casino & Table Games
- Late SwapLate swap is changing players in a DFS lineup after the contest has started, for games that have not yet begun. It is a genuine edge that most casual players never use.Fantasy Sports
- Lay BetA lay bet is a wager on something not to happen, available on betting exchanges. You take the role of the bookmaker, accepting someone else's stake and paying out if the selection wins.Sports Betting
- Lightning RouletteLightning Roulette applies random multipliers of 50x to 500x to a handful of numbers each round. Straight-up bets pay 29:1 instead of 35:1 to fund it, raising the house edge from 2.70% to 2.99%.Live Casino
- LineThe line is the number a sportsbook sets for a market. The points handicap, the total, or the odds themselves. Betting the line means accepting that number as the terms of your bet.Odds & Probability
- Line MovementLine movement is the change in odds or handicap between a market opening and closing. It reflects incoming money and new information, and the direction of movement is often more informative than the price itself.Odds & Probability
- LineupA lineup is the set of players you field in a fantasy contest. In DFS it must fit the salary cap and roster requirements; in season-long it is chosen weekly from your squad.Fantasy Sports
- Live CasinoLive casino streams real dealers and physical equipment to online players in real time. The games use actual cards and wheels rather than an RNG, and play considerably slower than software equivalents.Live Casino
- Live DealerA live dealer is a real person operating a casino game streamed to online players. Their role is to deal, spin and present. They have no influence over outcomes and no stake in results.Live Casino
- Long ShotA long shot is a selection priced at very long odds, reflecting a low estimated chance of winning. Long shots are systematically overbet, which makes them worse value than their prices already suggest.Odds & Probability
- Loss LimitA loss limit caps net losses over a period, stopping play once the threshold is reached. It is more precisely targeted than a deposit limit because it accounts for winnings recycled back into play.Compliance & Safer Gambling
- LotteryA lottery is a draw-based game where numbered tickets compete for prizes funded from ticket sales. Takeout is typically 40% to 50%, making lotteries the worst-value common form of gambling by a wide margin.Lottery
- Lottery BettingLottery betting means wagering on the outcome of a lottery draw with a bookmaker rather than buying an official ticket. Payouts are funded by the bookmaker or an insurer, not from the lottery prize pool.Lottery
- Lottery RolloverA rollover happens when nobody wins the lottery jackpot and it carries into the next draw. Because the accumulated money came from previous ticket sales, a rollover genuinely improves the expected value of a ticket.Lottery
- Lotto WheelingWheeling means buying a structured set of tickets covering combinations of chosen numbers, guaranteeing a lower-tier prize if enough of them are drawn. It does not improve expected value.Lottery
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- Malta Gaming Authority (MGA)The MGA licenses a large share of the European online gambling industry from Malta. It is a credible regulator with genuine requirements, generally regarded as somewhat less strict than the UK.Compliance & Safer Gambling
- MarginMargin is the percentage of total turnover a bookmaker expects to retain, derived from the overround. A 5% margin means the book expects to keep £5 of every £100 staked across a market.Core Wagering
- Matched BettingMatched betting extracts value from bookmaker promotions by backing an outcome with a bookmaker and laying the same outcome on an exchange, so the result does not matter and the bonus is converted to cash.Sports Betting
- Max Bet RuleThe max bet rule caps how much you can stake per spin or hand while a bonus is active, usually around £5. Breaching it even once voids the bonus and all winnings at most operators.Bonuses & Promotions
- Max WinMax win is the capped maximum a slot can pay, expressed as a multiple of your stake. Hitting a 10,000x cap on a 20p spin pays £2,000, and the cap can truncate a win that would otherwise have been larger.Slots
- Maximum BetThe maximum bet is the largest stake a game accepts. It caps the operator's exposure and makes doubling-up systems mathematically impossible to sustain.Casino & Table Games
- MegawaysMegaways is a licensed slot mechanic where each reel displays a random number of symbols every spin, producing a variable number of ways to win, commonly up to 117,649.Slots
- MiddlingMiddling means betting both sides of a market at different lines, so that a result landing between them wins both bets. It requires the line to move after your first bet and usually risks only the vig.Sports Betting
- Minimum BetThe minimum bet is the smallest stake a game will accept. Low minimums often come paired with worse rules, so the cheapest-looking table is frequently the most expensive to play.Casino & Table Games
- MoneylineA moneyline bet is a straight wager on who wins, with no handicap involved. Odds are adjusted to reflect each side's chance, so backing a strong favourite means risking more than you stand to win.Sports Betting
- MultiplierA multiplier increases a win by a stated factor. Multipliers are funded from within the game's RTP, so a game offering large multipliers pays less elsewhere to compensate.Live Casino
- Must-Drop JackpotA must-drop jackpot is guaranteed to pay out before a stated time or amount. As the deadline approaches the expected value of playing rises, which is one of the few genuinely calculable edges in slots.Slots
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- Near MissA near miss is an outcome that appears to just fail. Two jackpot symbols plus a third landing just above the payline. Reel weighting makes them far more common than chance alone would produce.Slots
- Net Gaming Revenue (NGR)NGR is gross gaming revenue minus the cost of bonuses, free bets and promotional credits. It is the figure that reflects what an operator genuinely earned from a player after the cost of attracting them.Core Wagering
- No Deposit BonusA no deposit bonus credits a small amount of bonus funds or free spins without requiring a deposit. They are genuinely free but carry high wagering requirements and low maximum conversion caps.Bonuses & Promotions
- No Purchase Necessary (AMOE)AMOE stands for Alternative Method of Entry. The free route into a sweepstakes, usually by post. Its existence removes the consideration element that would otherwise make the activity gambling.Sweepstakes & Social Casino
- Non-Runner No BetNon-runner no bet is a horse racing market where your stake is refunded if your selection does not run. It is the safer alternative to ante-post betting, at the cost of shorter prices.Sports Betting
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- Odds ConversionOdds conversion is translating between decimal, fractional and American formats, which all describe the same price differently. 2.50, 6/4 and +150 are identical odds, only the notation changes.Odds & Probability
- Odds of WinningThe odds of winning state the chance of a ticket winning a prize. The advertised figure counts stake refunds as wins, so the chance of actually gaining money is several times worse than quoted.Scratch Cards
- Odds-OnAn odds-on selection is priced below even money, meaning you stake more than you stand to win. A 1/2 shot requires £20 to win £10, and implies a probability above 50%.Odds & Probability
- OmahaOmaha is a poker variant where each player receives four hole cards and must use exactly two of them, plus exactly three community cards. The extra cards produce much stronger hands and far bigger swings than Hold'em.Poker
- Online SlotAn online slot is a software slot game played over the internet. They typically offer higher RTP than land-based machines, far more mechanics, and a much faster rate of play.Slots
- Opening LineThe opening line is the first price a sportsbook posts on a market. It is the least informed number the book will ever offer, which makes it both the best opportunity and the riskiest moment to bet.Odds & Probability
- Outright BetAn outright bet is on the overall winner of a competition rather than a single match. Because every entrant must be priced, outright markets carry some of the widest margins in betting.Sports Betting
- Outside BetAn outside bet in roulette covers a large group of numbers, red, black, odd, even, dozens or columns, paying 1:1 or 2:1. The house edge is identical to inside bets; only the volatility is lower.Casino & Table Games
- Over/Under (Totals)An over/under bet is on the combined total of a match, goals, points or runs, rather than on who wins. The book sets a number and you bet whether the real figure lands above or below it.Sports Betting
- Overall OddsOverall odds are the chance that a ticket wins any prize, including a refund of the ticket price. They are the figure advertised on scratch cards and they overstate the practical chance of winning.Scratch Cards
- OverroundOverround is the amount by which a bookmaker's implied probabilities exceed 100%. A book totalling 105% has a 5% overround, which is the bookmaker's built-in profit margin.Core Wagering
- Ownership PercentageOwnership percentage is the proportion of contest entries that include a given player. It is central to tournament strategy, because beating a large field requires being right about players most entrants avoided.Fantasy Sports
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- Pari-Mutuel BettingIn pari-mutuel betting all stakes go into a pool, the operator takes a fixed percentage, and the remainder is divided among winners. Odds are not fixed in advance. They depend entirely on how the pool is distributed.Sports Betting
- ParlayA parlay combines several bets into one, multiplying the odds together. Every leg must win for the bet to pay. The payouts look spectacular and the built-in margin compounds on every leg, making parlays the most profitable product a sportsbook sells.Sports Betting
- Partial Cash OutPartial cash out settles part of a bet early while leaving the rest running. It lets you secure some return without abandoning the full potential payout, at the cost of the same margin applied proportionally.Sports Betting
- Pass Line BetThe pass line is the fundamental craps bet, backing the shooter to win. It carries a 1.41% house edge and is the prerequisite for the zero-edge odds bet placed behind it.Casino & Table Games
- PaylineA payline is a defined path across the reels along which matching symbols must land to pay. More paylines means more chances to win per spin but a higher cost per spin, since each line is bet separately.Slots
- PayoutA payout is the total amount returned to you when a bet wins, normally including your original stake. It is distinct from profit, which is the payout minus what you staked.Core Wagering
- Photo FinishA photo finish is when the judge cannot separate runners by eye and consults a finish-line photograph. If the image still cannot separate them, the result is a dead heat.Horse & Greyhound Racing
- Pick'emPick'em contests ask you to choose whether players will go over or under a projected statistic, with payouts rising as you add more correct picks. They resemble parlays and are regulated as betting in a growing number of jurisdictions.Fantasy Sports
- Place BetA place bet pays out if your selection finishes within a specified number of positions rather than winning. How many places are paid depends on the field size and race type.Horse & Greyhound Racing
- Player PropA player prop is a bet on an individual's statistical performance, shots, points, yards, strikeouts, usually framed as an over/under line. They are the fastest-growing sportsbook market and carry higher margins than team markets.Sports Betting
- Point SpreadA point spread is a handicap applied to level an uneven contest. The favourite must win by more than the spread; the underdog can lose by less than it and still cash. Both sides are typically priced at -110.Sports Betting
- PricePrice is another word for odds. Taking a price means accepting the odds showing at the moment you bet, which then fixes your payout regardless of how the market moves afterwards.Odds & Probability
- Prize PoolThe prize pool is the total money available to be won, funded from ticket or entry fees after the operator's deduction. In pari-mutuel games the pool is divided among winners, so more winners means smaller individual prizes.Lottery
- Prize TierA prize tier is one level in a game's prize structure, from the top jackpot down to a stake refund. Most of a scratch card's advertised return sits in the lowest tiers, which frequently just give your money back.Scratch Cards
- Problem GamblingProblem gambling is gambling that causes harm to the person or those around them. It is a recognised clinical condition, it is treatable, and it is defined by consequences rather than by amount staked.Compliance & Safer Gambling
- Progressive Bingo JackpotA progressive bingo jackpot pays for completing a full house or blackout within a limited number of calls. The call threshold usually rises each day it goes unwon, which makes the jackpot genuinely better value over time.Bingo
- Progressive JackpotA progressive jackpot grows by taking a small percentage of every qualifying bet until someone wins it. The contribution comes out of the game's RTP, so the base game is worse than an equivalent non-progressive slot.Slots
- Prop BetA prop bet is a wager on an occurrence within an event rather than on its result. The number of corners, whether a player scores, the length of the anthem. Margins on props are typically much higher than on main markets.Sports Betting
- Provably FairProvably fair is a cryptographic system that lets a player verify each result was not manipulated after the bet was placed. It proves the outcome was predetermined and untampered. It does not prove the odds are good.Slots
- Public MoneyPublic money is the aggregate of recreational betting, characterised by a bias toward favourites, overs and popular teams. Books tolerate large imbalances of it because it is, on average, unprofitable.Odds & Probability
- PunterPunter is British and Irish slang for a person who bets. It carries no technical meaning and is used neutrally across the industry, from casual bettors to professionals.Core Wagering
- PushA push is a tie between the result and the betting line, such as a team winning by exactly the spread. The bet is cancelled and the stake returned, counting as neither a win nor a loss.Sports Betting
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- RakeRake is the commission a poker room takes from each pot or tournament entry. It is the house's entire income from poker, and it is the reason most players lose even in a game of skill.Poker
- Random Number Generator (RNG)An RNG is the algorithm that determines every outcome in an online casino game. It runs continuously and selects the result the instant you press spin. The reel animation simply displays a decision already made.Slots
- Reality CheckA reality check is a periodic on-screen reminder showing how long you have played and how much you have won or lost. It interrupts play and requires acknowledgement before continuing.Compliance & Safer Gambling
- RedemptionRedemption is exchanging Sweeps Coins for cash or prizes at a sweepstakes casino. It requires identity verification, a minimum balance, and that the coins have been played through at least once.Sweepstakes & Social Casino
- Redemption ThresholdThe redemption threshold is the minimum Sweeps Coins balance required before you can cash out, commonly 50 or 100 SC. Balances below it must be played rather than withdrawn.Sweepstakes & Social Casino
- ReelA reel is a vertical strip of symbols on a slot. Most games use five, and the symbols on each are weighted so that valuable ones appear far less often than the display suggests.Slots
- Refer a FriendRefer a friend pays an existing customer for introducing a new one, usually once the referral has deposited and wagered a set amount. Rewards are typically bonus funds rather than cash.Bonuses & Promotions
- Reload BonusA reload bonus is a deposit match offered to existing customers rather than new ones. Terms are usually less generous than a welcome offer but often carry lower wagering requirements.Bonuses & Promotions
- Remaining PrizesRemaining prizes are the unclaimed prizes still available in a scratch card game. Because prizes are pre-allocated to a finite print run, a game with its top prizes already claimed is genuinely worse value at the same price.Scratch Cards
- Responsible GamblingResponsible gambling refers to the tools and obligations designed to keep gambling from causing harm. Deposit limits, self-exclusion, reality checks and operator duties of care. The term is contested because it places responsibility on the individual.Compliance & Safer Gambling
- Return to Player (RTP)RTP is the percentage of all money staked on a game that it pays back to players over the very long run. A 96% RTP slot returns £96 for every £100 wagered across millions of spins, not across your session.Core Wagering
- Reverse WithdrawalReverse withdrawal is a pending period during which you can cancel a withdrawal and return the money to your playable balance. It exists solely to give you the chance to gamble winnings you had decided to take.Compliance & Safer Gambling
- Risk-Free BetA risk-free bet refunds your stake if the bet loses, but almost always as bet credits rather than cash. The name overstates it: you recover most of the value, not all of it.Bonuses & Promotions
- RiverThe river is the fifth and final community card in Hold'em and Omaha. With no cards left to come, all draws are resolved and the betting round that follows is pure value or pure bluff.Poker
- RolloverRollover is another name for a wagering requirement. The number of times a bonus must be staked before it can be withdrawn. In lottery contexts the same word means something entirely different: an unwon jackpot carried into the next draw.Core Wagering
- RouletteRoulette is a wheel game where you bet on where a ball will land. The house edge comes entirely from the zero pockets: 2.70% on a single-zero wheel, 5.26% on a double-zero one.Casino & Table Games
- Round RobinA round robin breaks several selections into every possible smaller parlay, so you still win something if one leg fails. Three selections produce three two-leg parlays, each staked separately.Sports Betting
- Rule 4 DeductionA Rule 4 deduction reduces winnings on a horse race when another runner is withdrawn after betting has opened. The size of the deduction depends on the withdrawn horse's price. The shorter it was, the bigger the cut.Sports Betting
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- Salary CapIn DFS, the salary cap is the budget available to build a lineup, with each player carrying a price based on expected performance. Finding players priced below their likely output is the core skill.Fantasy Sports
- Same Game ParlayA same game parlay combines multiple bets from a single match into one wager. Because the legs are correlated, books price them with custom algorithms that carry substantially higher margin than standard parlays.Sports Betting
- Scatter SymbolA scatter symbol pays or triggers a feature regardless of where it lands, ignoring paylines entirely. Three scatters anywhere on the reels is the most common way a free spins round begins.Slots
- Scratch CardA scratch card is an instant win ticket with a coating you remove to reveal whether you have won. Prizes are pre-allocated across a finite print run, so tickets can still be sold after all top prizes have been claimed.Scratch Cards
- ScratchedA scratched horse has been withdrawn from a race after entries closed. Bets on it are normally refunded, and bets on the remaining runners may be reduced by a Rule 4 deduction.Horse & Greyhound Racing
- Season-Long FantasySeason-long fantasy runs across an entire sporting season, with the same squad managed through drafts, trades and waivers. It rewards long-term management rather than the single-slate optimisation of DFS.Fantasy Sports
- Second Chance DrawA second chance draw lets you enter losing tickets into a separate prize draw. It recovers a small amount of value from tickets that would otherwise be worthless, though entry rates are low enough that odds are often decent.Scratch Cards
- Self-ExclusionSelf-exclusion is a formal request to be blocked from gambling for a set period. Once activated it cannot be reversed early, which is the entire point. The decision is made once and enforced afterwards.Compliance & Safer Gambling
- Sharp MoneySharp money is betting volume from people the sportsbook considers informed and consistently profitable. Books move lines quickly in response to it, even when the amounts are small.Odds & Probability
- Sic BoSic Bo is a three-dice game where you bet on the outcome of a roll. House edges range from about 2.8% on the best bets to over 30% on the worst, making bet selection unusually important.Casino & Table Games
- Side BetA side bet is an optional wager alongside the main game, usually on a specific card combination or occurrence. Side bets almost always carry several times the house edge of the game they sit beside.Live Casino
- Slot MachineA slot machine is a gambling device where symbols land on reels and matching combinations pay out. Every outcome is decided by a random number generator the instant you press spin. The spinning reels are animation, not process.Slots
- Snake DraftA snake draft reverses the pick order each round, so the manager picking last in round one picks first in round two. It is the standard format for season-long fantasy leagues.Fantasy Sports
- Social CasinoA social casino offers casino-style games with virtual currency that cannot be redeemed for anything. There are no prizes, which is why it is not gambling and why it is available almost everywhere.Sweepstakes & Social Casino
- Soft HandA soft hand in blackjack contains an ace counted as 11, so it cannot bust on the next card. Soft hands are played more aggressively than hard hands of the same total.Casino & Table Games
- SplitSplitting separates a pair into two hands, each receiving a new second card and each requiring a matching bet. Always split aces and 8s; never split 10s or 5s.Casino & Table Games
- StackingStacking means selecting multiple players from the same team or game so their performances reinforce each other. It raises the ceiling of a lineup and is standard practice in DFS tournaments.Fantasy Sports
- StakeThe stake is the amount of money placed on a single bet. It is the figure at risk if the bet loses, and the figure that returns to you alongside any profit if it wins.Core Wagering
- StandTo stand is to decline further cards in blackjack, keeping your current total. Once you stand your hand is final and the dealer plays out their hand against it.Casino & Table Games
- Starting Price (SP)The starting price is the official odds of a horse at the moment a race begins, determined from on-course bookmaker prices. Betting at SP means accepting whatever that price turns out to be.Horse & Greyhound Racing
- Steam MoveA steam move is a sudden, large and coordinated shift in a betting line across multiple sportsbooks at once, usually caused by a syndicate placing substantial bets simultaneously.Odds & Probability
- Sticky BonusA sticky bonus can never be withdrawn itself, only winnings above it. When you cash out, the bonus amount is removed from your balance, which makes it worth considerably less than a non-sticky bonus of the same size.Bonuses & Promotions
- Sticky WildA sticky wild remains locked in position for a number of subsequent spins rather than disappearing. They are most common inside free spins rounds, where accumulating wilds drives the largest wins.Slots
- Straight UpA straight up bet backs a single roulette number, paying 35:1. It is the highest-paying and most volatile bet on the table, carrying the same 2.70% house edge as every other European roulette bet.Casino & Table Games
- SuperfectaA superfecta requires the first four finishers in exact order. It is the hardest common racing bet, with payouts that can reach five or six figures from a small stake and takeout at the top of the scale.Horse & Greyhound Racing
- Sweeps CoinsSweeps Coins are the redeemable currency at a sweepstakes casino. They cannot be bought directly, arrive free with Gold Coin purchases or by postal request, and can be exchanged for cash above a threshold.Sweepstakes & Social Casino
- Sweepstakes CasinoA sweepstakes casino offers casino-style games using a dual-currency system that is structured to fall outside conventional gambling law. You buy one currency and receive another free, and only the free one can be redeemed for cash.Sweepstakes & Social Casino
- Sweepstakes RulesSweepstakes rules are the official legal terms governing a sweepstakes casino, including the free entry method, eligibility and prize conditions. They are the actual contract, and they differ from the marketing.Sweepstakes & Social Casino
- SyndicateA syndicate is a group that pools money to buy more lottery tickets and shares any winnings. It increases your chance of winning something proportionally while reducing what you receive by the same factor.Lottery
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- Table LimitsTable limits set the minimum and maximum bet allowed on a game. The maximum exists largely to defeat doubling-up systems, which require an unlimited ceiling to work.Casino & Table Games
- TeaserA teaser is a parlay in which you move the spread in your favour on every leg, in exchange for a much lower payout. A standard NFL teaser shifts each line by six points.Sports Betting
- Texas Hold'emTexas Hold'em is the most popular poker variant, giving each player two private cards and five shared community cards. Unlike casino games, you compete against other players and the house takes a commission called rake.Poker
- ToteThe Tote is the British pool betting operator, where all stakes go into a pool and winners share it after a deduction. Unlike a bookmaker, the Tote offers no fixed odds. The return depends entirely on how the pool divides.Horse & Greyhound Racing
- TrifectaA trifecta requires the first three finishers in exact order. Payouts are large, the odds against are substantial, and pool takeout on trifectas is among the highest in racing.Horse & Greyhound Racing
- True OddsTrue odds are the actual mathematical probability of an outcome, as opposed to the odds a bookmaker offers. The gap between the two is the house edge, and in casino games it is exactly calculable.Odds & Probability
- TurnoverTurnover is the total amount wagered over a period, counting every bet including those funded by winnings. It is not the same as money lost. A £100 deposit can easily generate several thousand in turnover.Core Wagering
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- UK Gambling Commission (UKGC)The UKGC regulates gambling in Great Britain and operates one of the strictest regimes in the world, covering fund protection, safer gambling obligations and advertising. Its licence is widely regarded as the strongest available.Compliance & Safer Gambling
- UnderdogThe underdog is the selection the market rates less likely to win, shown at longer odds or with a plus sign in American formats. Underdogs receiving points on the spread only need to lose narrowly to cash.Odds & Probability
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- Vigorish (Vig / Juice)Vigorish is the bookmaker's commission, built into the odds rather than charged separately. Standard American spread betting at -110 on both sides carries about 4.5% vig. You risk $110 to win $100 on a roughly even proposition.Core Wagering
- VIP ProgramA VIP programme rewards high-volume players with cashback, personal managers and enhanced limits. Rewards are calculated on turnover, so the programme is funded entirely by the losses it encourages.Bonuses & Promotions
- Virtual CurrencyVirtual currency is in-game money with no cash value, used in social and sweepstakes casinos. It can usually be bought but not redeemed, which is what keeps social casino play outside gambling law.Sweepstakes & Social Casino
- Void BetA void bet is cancelled with the stake returned, usually because an event did not take place, a participant withdrew, or the market was priced in error. It counts as neither a win nor a loss.Sports Betting
- VolatilityVolatility describes how unevenly a game delivers its returns. High volatility means long dry spells punctuated by large wins; low volatility means frequent small wins. It is completely independent of RTP, and it is usually the more useful number to know.Core Wagering
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- WagerA wager is money risked on an uncertain outcome in exchange for a potential return. It is the formal word for a bet, and in gambling terms and conditions it is almost always the word that matters, because bonus rules are written around wagering rather than depositing.Core Wagering
- Wagering RequirementsA wagering requirement is the amount you must stake before bonus money can be withdrawn. A £50 bonus with 35x wagering means £1,750 of bets must be placed first, which is why most bonuses are never successfully cashed out.Bonuses & Promotions
- Waiver WireThe waiver wire is the pool of unowned players available to claim during a fantasy season. Working it well is widely regarded as a larger edge than drafting.Fantasy Sports
- Ways to WinWays to win replaces fixed paylines with adjacency: any matching symbols on consecutive reels pay, wherever they land vertically. A 5x3 grid produces 243 ways, a 5x4 grid produces 1,024.Slots
- Welcome BonusA welcome bonus is the offer made to new customers on their first deposit, usually a percentage match plus free spins. Its value depends almost entirely on the wagering requirement, not the headline amount.Bonuses & Promotions
- Wild SymbolA wild symbol substitutes for other symbols to complete winning combinations. Wilds almost never substitute for scatters, which is why they do not help you reach the bonus round.Slots
- Withdrawal Processing TimeWithdrawal processing time is how long it takes for winnings to reach you, combining the operator's internal review with the payment provider's transfer time. First withdrawals are slowest because verification happens then.Compliance & Safer Gambling
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- 75-Ball Bingo75-ball bingo is the American standard, played on a 5x5 grid with a free centre square. Games are won by completing a designated pattern rather than a full card.Bingo
- 90-Ball Bingo90-ball bingo is the traditional British format, played on tickets of three rows and nine columns containing 15 numbers. Each game has three prizes: one line, two lines and a full house.Bingo