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ace - definition and synonyms

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noun [countable]     ace pronunciation in British English
/eɪs/
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singularace
pluralaces
  1. 1
    in card games, a card with only one symbol and either the highest or lowest value in a suit

    the ace of hearts

  2. 2
    in tennis, a very fast serve (=first hit of the ball) that your opponent cannot reach with their racket
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  3. 3
    informal someone who is very good at doing something

    an ace at solving puzzles

  4. 4
    American a hole in one
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