Definition of deuce noun from the Oxford Advanced American Dictionary

     

    deuce

     noun
    noun
    NAmE//dus//
     
     
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  1. 1 [countable] a playing card with two dots on it the deuce of clubs
  2. 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
  3. 3the deuce [singular] (old-fashioned) (informal) used in questions to show that you are annoyed What the deuce is he doing?
See the Oxford Advanced Learner's Dictionary entry: deuce