deuce /djuːs $ duːs/ noun
[Date: 1400-1500; Language: Old French; Origin: deus 'two', from Latin duos]

1. [uncountable] the situation in tennis when both players have 40 points, after which one of the players must win two more points to win the game

2. [countable] American English a playing card with the number two on it

3. what/how etc the deuce ...? old-fashioned spoken used to add force to a question:
What the deuce is going on?

[TahlilGaran] Dictionary of Contemporary English ▲