ace

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 [ˈeɪs]



WordReference Random House Learner's Dictionary of American English © 2019
ace /eɪs/USA pronunciation   n., v.,  aced, ac•ing, adj. 
n. [countable]
  1. Gamesa playing card with a single spot:an ace of hearts.
  2. Sport(in tennis, etc.) a point made on an untouched serve.
  3. Militarya fighter pilot who downs at least five enemy aircraft.
  4. an expert:the ace of the pitching staff.

v. [+ object]
  1. Sportto win a point against (an opponent) with an ace:aced his opponent ten times in the match.
  2. Slang Termsto defeat, esp. easily: [(+ out) + object]She aced (out) her opponent.[ + obj + out]:aced him out.
  3. Slang TermsSlang. to receive a grade of A in or on:aced the course.

adj. 
  1. excellent:[before a noun]an ace player.
Idioms
  1. Idioms, Games ace in the hole, [countable] an advantage held in reserve:His ace in the hole was the secret report he had on their finances.Also, ace up one's sleeve.


WordReference Random House Unabridged Dictionary of American English © 2019
ace  (ās),USA pronunciation n., v.,  aced, ac•ing, adj. 
n. 
  1. Gamesa playing card or die marked with or having the value indicated by a single spot:He dealt me four aces in the first hand.
  2. Gamesa single spot or mark on a playing card or die.
  3. Sport(in tennis, badminton, handball, etc.)
    • Also called  service ace. a placement made on a service.
    • any placement.
    • a serve that the opponent fails to touch.
    • the point thus scored.
  4. Militarya fighter pilot credited with destroying a prescribed number or more of enemy aircraft, usually five, in combat.
  5. a very skilled person;
    expert;
    adept:an ace at tap dancing.
  6. Slang Termsa one-dollar bill.
  7. Slang Termsa close friend.
  8. Sport[Golf.]
    • Also called  hole in one. a shot in which the ball is driven from the tee into the hole in one stroke:He hit a 225-yard ace on the first hole.
    • a score of one stroke made on such a shot:to card an ace.
  9. Slang Terms, Drugsa barbiturate or amphetamine capsule or pill.
  10. a very small quantity, amount, or degree;
    a particle:not worth an ace.
  11. Slang Termsa grade of A;
    the highest grade or score.
  12. ace up one's sleeve, an important, effective, or decisive argument, resource, or advantage kept in reserve until needed.
  13. Slang Termsbe aces with, to be highly regarded by:The boss says you're aces with him.
  14. Gameseasy aces, Auction Bridge. aces equally divided between opponents.
  15. within an ace of, within a narrow margin of;
    close to:He came within an ace of winning.

v.t. 
  1. Sport(in tennis, badminton, handball, etc.) to win a point against (one's opponent) by an ace.
  2. Sport[Golf.]to make an ace on (a hole).
  3. Slang Termsto cheat, defraud, or take advantage of (often fol. by out):to be aced out of one's inheritance; a friend who aced me out of a good job.
  4. Slang Terms
    • to receive a grade of A, as on a test or in a course (sometimes fol. by out).
    • to complete easily and successfully:He aced every physical fitness test they gave him.
  5. Slang Termsace it, to accomplish something with complete success:a champion who could ace it every time.

adj. 
  1. excellent;
    first-rate;
    outstanding.
  • 4
  • Latin: a unit; compare as2; sense 4 after French as in World War I; sense 5
  • Old French as
  • 1250–1300; 1915 for def. 4; Middle English as, aas

ACE, 
  • American Council on Education.
  • Army Corps of Engineers.


  • Collins Concise English Dictionary © HarperCollins Publishers::

    ace /eɪs/ n
    1. any die, domino, or any of four playing cards with one spot
    2. a single spot or pip on a playing card, die, etc
    3. a winning serve that the opponent fails to reach
    4. a fighter pilot accredited with destroying several enemy aircraft
    5. informal an expert or highly skilled person: an ace at driving
    6. an ace up one's sleeve, an ace in the holea hidden and powerful advantage
    adj
    1. informal superb; excellent
    Etymology: 13th Century: via Old French from Latin as a unit, perhaps from a Greek variant of heis one



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