- Two; a card or a die with two spots; as, the deuce of
hearts. - A condition of the score beginning whenever each side has
won three strokes in the same game (also reckoned "40 all"), and
reverted to as often as a tie is made until one of the sides secures
two successive strokes following a tie or deuce, which decides the
game. - The devil; a demon.
Meaning of 'deuce' (Princeton's WordNet)
1 . deuce
[ n]
Meaning (1): - a word used in exclamations of confusion