- 1[countable] a playing card with two dots on it the deuce of clubs
- 2[uncountable, countable] (in tennis) the situation when both players have 40 as a score, after which one player must win two points one after the other in order to win the game
- 3the deuce [singular] (old-fashioned) (informal) used in questions to show that you are annoyed What the deuce is he doing?
Check pronunciation: deuce