There are 2 main definitions of deuce in English:

deuce1

Syllabification: deuce
Pronunciation: /d(y)o͞os
 
/

noun

1North American A thing representing, or represented by, the number two, in particular.
1.1The two on dice or playing cards.
More example sentences
  • The deuce of each suit is called the sow (die Sau).
  • The dealer gave her a deuce and she jumped from fifth place to second place and earned $22,000 in doing so.
  • Let's say everybody is dealt a bunch of small cards and the dealer has a deuce up.
1.2A throw of two at dice.
More example sentences
  • My double-down blackjack bets drew deuces, the ball avoided my numbers in roulette like it owed them money, and if a player needed a card to beat me, then by God, that card was gonna come.
  • If he should now throw 2 deuces for a total of 5, the player then throws all five dice for the third throw.
1.3 informal dated A two-dollar bill.
More example sentences
  • Sure enough, I handed over a twenty and said "two please", back came three fresh Federal Reserve Bank of Richmond deuces.
  • The Legal Tender deuces have always held a special attraction to collectors.
2 Tennis The tie score of 40-all in a game, at which a player needs two consecutive points to win the game.
More example sentences
  • Federer was in the sort of form which took him to the Wimbledon title this year, with Blake staving off an amazing 19 out of 20 break-point opportunities, and surviving 10 deuces in one service game.
  • They had a match point in the semi-final against the Cantrells, but Burdett served a double fault on the sudden-death second deuce in which this point is decisive under the rules of the competition designed to prevent drawn-out matches.
  • I believe that happens during a deuce when the server has just won a point, and if he or she wins the next point the game is theirs.

Origin

late 15th century: from Old French deus 'two', from Latin duos.

Definition of deuce in:

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There are 2 main definitions of deuce in English:

deuce2

Syllabification: deuce
Pronunciation: /d(y)o͞os
 
/

noun

(the deuce) informal
Used as a euphemism for “devil” in expressions of annoyance, impatience, or surprise or for emphasis: how the deuce are we to make a profit? what the deuce are you trying to do?
More example sentences
  • In 49th Parallel, who knows what the deuce he is doing, other than turning in what I believe to be the only bad performance in any Powell and Pressburger film.
  • Well, what the deuce are you waiting for, old boy?
  • I'm back and now you can ask me: What the deuce is Deuce Bigelow: Male Gigolo, anyway?

Origin

mid 17th century: from Low German duus, probably of the same origin as deuce1 (two aces at dice being the worst throw).

Phrases

a (or the) deuce of a ——

Used to emphasize how bad, difficult, or serious something is.
More example sentences
  • If Hitler's army had been composed of Movie Nazis, it would have been, to quote any of the cocky, effete soldiers David Niven played in the 60s, a damned deuce of a thing, eh?
  • Ken Allen & Les Hair are in the artillery & they have a pretty rough spin occasionally & get in a deuce of a state especially when they are up with the guns.
  • I forgot to tell you I think that for about 4 days from the 19th onward we had a deuce of a heat wave.

Definition of deuce in: