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English definition of “deuce”

deuce

noun [U]     /djuːs/ US  /duːs/
the score in tennis when both players have 40 points Tennis and racket sports the word for 'two' in some card and dice games Playing cards the deuce old-fashioned informal used in questions to express anger or surprise : What the deuce do you think you're doing?Expressions of surpriseExpressions of anger
(Definition of deuce noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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