Having a bet in play on a game; also used to refer to total betting volume.

Betting all of your remaining chips on a single hand.

A forced bet placed by all players before cards are dealt.

Betting both sides of a market at different sportsbooks to guarantee a profit regardless of outcome.

A bet that appears won but loses due to a last-second or improbable event.

The total amount of money set aside specifically for gambling.

The practice of managing your gambling funds to minimize the risk of going broke.

The mathematically optimal play for every possible hand in blackjack.

Forced bets posted by the two players to the left of the dealer button before cards are dealt.

Betting or raising with a weak hand to try to make opponents fold better hands.

A promotional offer from a sportsbook or casino that gives you extra funds or free bets.

The win rate needed to break even at given odds, accounting for the vig.

Going over 21 in blackjack, resulting in an automatic loss.

A strategy for tracking the ratio of high to low cards remaining in the deck to gain an edge.

The difference between the odds you bet at and the final odds at market close.

A bet placed after the point is established that works like a new Pass Line bet.

Free perks given by casinos to players based on their betting volume and loyalty.

A bet on the flop by the pre-flop raiser, regardless of whether the flop improved their hand.

The current trading price of a prediction market contract, reflecting the crowd's probability estimate.

A parlay combining bets whose outcomes are statistically linked, increasing the true probability of both hitting.

Winning a bet against the point spread.

The opposite of the Pass Line — wins when the shooter sevens out, loses on come-out 7 or 11.

Doubling your bet in blackjack in exchange for receiving exactly one more card.

Any advantage a bettor has over the bookmaker or casino on a specific wager.

A binary contract that pays $1 if a specific event occurs and $0 if it does not.

A horse racing bet where you pick the first and second place finishers in exact order.

The average amount you can expect to win or lose per bet over time.

The team or player expected to win, indicated by negative moneyline odds.

A pick'em entry type where you choose 2-6 players and all picks must be correct to win.

The three stages of community cards dealt in Texas Hold'em and Omaha poker.

The additional value of a bet that comes from the chance your opponent will fold.

A promotional bet from a sportsbook where you risk nothing but keep the profit if you win.

A poker hand containing three of a kind plus a pair (e.g., K-K-K-5-5).

Long-term bets on events that will be decided in the future, like championship winners.

A DFS tournament with a fixed prize pool that pays out regardless of how many entries it receives.

The total amount of money wagered on an event or at a sportsbook over a period.

Placing a bet on the opposite side of an existing wager to guarantee profit or minimize loss.

To request another card in blackjack.

The percentage of total money wagered that the sportsbook or casino keeps as profit.

The mathematical advantage the casino has over players, expressed as a percentage of each bet.

The probability of an outcome as implied by the betting odds, including the bookmaker's margin.

A side bet offered when the dealer shows an Ace, paying 2:1 if the dealer has blackjack.

Another term for vigorish — the commission built into the odds by the sportsbook.

A formula for calculating the optimal bet size to maximize long-term bankroll growth.

Placing bets on a game while it's in progress, with odds that update in real time.

A betting system where you double your bet after every loss, attempting to recover losses with one win.

Betting both sides of a game at different numbers to win both bets if the final lands between them.

A bet on which team or player will win a game outright, with no point spread.

The track handicapper's estimated odds for each horse, published before betting opens.

An immediate winning hand: blackjack (Ace + 10) or craps come-out 7 or 11.

The true fair odds after removing the sportsbook's built-in margin.

A zero house edge bet placed behind a Pass/Come or Don't Pass/Don't Come bet.

A bet on whether the combined score of a game will be over or under a set number.

The percentage of DFS lineups that roster a specific player in a contest.

A betting system where all bets are pooled together and payouts are calculated from the total pool after the house take.

A single bet combining two or more selections where all must win for the bet to pay out.

The fundamental craps bet — wins on 7 or 11 on the come-out roll, loses on 2, 3, or 12.

A contest where you predict player performances (over/under) against set stat lines.

A handicap applied to the favorite to create a more even betting market.

Where you sit relative to the dealer button, determining when you act in each betting round.

The ratio of the current pot size to the cost of a call, used to determine if a call is profitable.

A market where you trade contracts on real-world event outcomes, with prices reflecting crowd probability estimates.

Gambling behavior that disrupts personal, family, or professional life.

A jackpot that grows incrementally as players make bets, until someone wins it.

A bet on a specific event within a game rather than the final outcome.

A bet result where the outcome lands exactly on the spread or total, resulting in a refund.

Gambling within your means, with awareness of risks and self-imposed limits.

The percentage of wagered money a game returns to players over time.

When the betting line moves in the opposite direction from where the majority of bets are placed.

The probability of losing your entire bankroll, even with a positive edge.

Your net profit divided by total amount wagered, expressed as a percentage.

The highest possible hand in poker: A-K-Q-J-10, all of the same suit.

The budget limit for building a DFS lineup, forcing strategic player selection.

A voluntary program that bans you from gambling at casinos or online platforms for a set period.

A professional or highly skilled bettor whose action influences line movement.

A device holding multiple decks of cards used in table games like blackjack and baccarat.

Dividing a pair in blackjack into two separate hands, each with its own bet.

A casual bettor who bets for entertainment rather than as a professional.

To keep your current hand and take no more cards in blackjack.

A statistical measure of how spread out results are from the average.

A sudden, significant shift in odds caused by a large volume of sharp betting action.

An online casino that uses a dual-currency model (gold coins + sweeps coins) to operate legally in most US states.

A type of parlay where you get extra points on spreads or totals in exchange for lower odds.

Emotional state causing irrational decisions, usually triggered by a bad beat or losing streak.

A horse racing bet where you pick the first, second, and third place finishers in exact order.

The actual mathematical probability of an outcome, without any bookmaker margin.

The team or player expected to lose, indicated by positive moneyline odds.

A standardized bet size used to track performance, typically 1-2% of your bankroll.

The measure of how much results deviate from the expected outcome in the short term.

The commission a sportsbook charges on a bet, built into the odds.

A very high-stakes gambler who bets extremely large amounts.

The three most basic horse racing bets — first place, top two, or top three.