Action - The money wagered by a player during a full gambling session.

Active Player - In poker, a player who is still in the game.

Add-on - In poker, the possibility of buying additional chips during a tournament.

Aggregate Limit - A casino's total payout limit during any one game.

Aggregate Winnings - Total winnings.

All or Nothing - In Keno, a ticket that only pays if either all of the picked numbers are drawn or none of the picked numbers are drawn.

Anchor Man - In Blackjack, the player betting on the last box on the table, said to be "anchoring" the game.

Ante - In card games, a bet required to begin a hand. The initial compulsory bet before you receive your cards in Caribbean Stud Poker.

Any Craps - One-roll dice bet covering 2, 3, and 12.

Any Seven - One-roll dice bet covering any 7.

Arm - In Craps, a player who has such skill at throwing the dice that he can alter the conventional odds of the game. Such a player is said to be "an arm", and is usually not seen kindly by the dealer.

Audition - A test a dealer must pass before being hired by a casino.