/dju:s; [US] du:s; dus/
n
1 two on playing-cards or dice (shown as pips and/or numbers) （纸牌或色子上的）两点（以点和[或]数字表示）.
2 (in tennis) score of 40-all, after which either side must gain two successive points to win the game （网球赛中）40平（其後一方须连胜两球方为胜）.

/dju:s; [US] du:s; dus/ n (dated infml euph 旧, 口, 婉)
1 the deuce [sing] (used as an expression of annoyance 用以表示烦恼、厌恶等)
*The deuce! I've lost my keys! 真倒霉, 钥匙丢了!
* Who/What/Where the deuce is that? 到底是哪个家伙[是什么鬼名堂/在什么鬼地方]?
* What the deuce is going on? 讨厌, 到底是怎么回事?
2 (idm 习语) the deuce of a sth a very bad case of sth 非常糟糕; 十分严重
*I've got the deuce of a headache. 我头痛极了.

n
[Date: 1400-1500; Language: Old French;Origin: deus 'two', from Latin duos]
[U]
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
[C]AmE
a playing card with the number two on it
what/how etc the deuce ...?
old-fashioned spoken used to add force to a question
　What the deuce is going on?