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English definition of “ace”

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ace

noun [C] uk   /eɪs/ us  

ace noun [C] (PLAYING CARD)

one of the four playing cards with a single mark or spot, which have the highest or lowest value in many card games: the ace of hearts/clubs/spades/diamonds

ace noun [C] (SKILLED PERSON)

informal a person who is very skilled at something: a tennis/flying ace

ace noun [C] (TENNIS)

in tennis, a serve (= a hit of the ball that starts play) that is so strong and fast that the other player cannot return the ball: That's the third ace Lawson has served this match.

ace

verb [T] uk   /eɪs/ US informal us  
to do very well in an exam: I was up all night studying, but it was worth it - I aced my chemistry final.

ace

adjective uk   /eɪs/ old-fashioned slang us  
excellent: He's an ace basketball player. That's an ace bike you've got there.
(Definition of ace from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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