Outs. Noun. Cards that would complete a hand or improve it sufficiently to win the pot, especially when the hand is an underdog. ADDITIONAL INFORMATION. In a poker game with more than one betting round, an out is any unseen card that , if drawn, will One's number of outs is often used to describe a drawing hand: "I had a two-outer" meaning you had a hand that only two cards in the deck could. How many outs do I have? is a guestion that is asked in poker. An explanation is given here.