Nut ( poker )

1) Daily requirement. When a player refers to his nut, he means how much he has to win just to "break even." Anything over that is "gravy." 2) Overhead. For a card room, the nut is expenses, beyond which comes the profit. 3) Difficult situation; usually part of the phrase tough nut to crack. 4) In hold 'em, pertaining to the best possible hand at a given point in a pot; usually followed by flush or straight, sometimes by high or low. For example, if four spades are on the board, whoever has the ace of spades as one of his hole cards has the nut flush.