donk bet A bet made by a donk, i.e. one that is generally considered weak or to demonstrate inexperience or lack of understanding of strategy. A bet made in early position by a player who didn't take initiative in the previous betting round. It was named because this move is often considered indicative of a weak player (since it is more often reasonable to expect a continuation bet).
donkey a weak player, also known as "fish" or a "donk" door card In a stud game, a player's first face-up card. Patty paired her door card on fifth street and raised, so I put her on trips. In Texas hold 'em, the door card is the first visible card of the flop. In Draw poker, the sometimes visible card at the bottom of a player's hand. Players will often deliberately expose this card, especially at lowball.