baby
A low-ranked card, usually used in lowball games. Also “spoke” when between ace and five.
backdoor

A draw requiring two or more rounds to fill. For example, catching two consecutive cards in two rounds of seven-card stud or Texas hold ‘em to fill a straight or flush.
A hand made other than [...]

A-B-C, A-B-C-D

A sequence of the lowest cards in a lowball game. For example, the hand 8-6-3-2-A might be called an eight-six-a-b-c.
Uncreative or predictable play. He’s an a-b-c player.

ace-to-five, ace-to-six
Methods of evaluating low hands.

act
To make a play (bet, call, raise, or fold) at the required time. It is Ted’s turn [...]