Princeton's WordNet

1. one, 1, I, ace, single, unity(noun)

   the smallest whole number or a numeral representing this number

   "he has the one but will need a two and three to go with it"; "they had lunch at one"

2. ace(noun)

   one of four playing cards in a deck having a single pip on its face

3. ace, adept, champion, sensation, maven, mavin, virtuoso, genius, hotshot, star, superstar, whiz, whizz, wizard, wiz(noun)

   someone who is dazzlingly skilled in any field

4. angiotensin converting enzyme, angiotensin-converting enzyme, ACE(noun)

   proteolytic enzyme that converts angiotensin I into angiotensin II

5. Allied Command Europe, ACE(noun)

   a major strategic headquarters of NATO; safeguards an area extending from Norway to Turkey

6. ace(adj)

   a serve that the receiver is unable to reach

7. ace, A-one, crack, first-rate, super, tiptop, topnotch, top-notch, tops(p)(verb)

   of the highest quality

   "an ace reporter"; "a crack shot"; "a first-rate golfer"; "a super party"; "played top-notch tennis"; "an athlete in tiptop condition"; "she is absolutely tops"

8. breeze through, ace, pass with flying colors, sweep through, sail through, nail(verb)

   succeed at easily

   "She sailed through her exams"; "You will pass with flying colors"; "She nailed her astrophysics course"

9. ace(verb)

   score an ace against

   "He aced his opponents"

10. ace(verb)

    play (a hole) in one stroke

11. ace(verb)

    serve an ace against (someone)

Kernerman English Learner's Dictionary

1. ace(noun)ɪs

   a playing card with a single symbol

   the ace of clubs

Wiktionary

1. ace(Noun)

   A single point or spot on a playing card or die.

2. ace(Noun)

   A card or die face so marked.

   I have the ace of diamonds.

3. ace(Noun)

   A very small quantity or degree; a particle; an atom; a jot.

4. ace(Noun)

   A serve won without the opponent hitting the ball.

5. ace(Noun)

   The best pitcher on the team.

6. ace(Noun)

   A run.

7. ace(Noun)

   A hole in one.

8. ace(Noun)

   An expert at something.

9. ace(Noun)

   A military aircraft pilot who is credited with shooting down five or more enemy aircraft.

10. ace(Verb)

    To pass (a test, interviews etc.) perfectly.

11. ace(Verb)

    To win a point by an ace.

12. ace(Verb)

    To make an ace (hole in one).

13. ace(Noun)

    A perfect score on a school exam.

14. ace(Adjective)

    Excellent.

15. Ace(ProperNoun)

    A male given name.

16. Ace(ProperNoun)

    A common nickname suggesting skill, particularly among airplane pilots.

Origin: as, from as, from as, assis, unity, copper coin, the unit of coinage. Compare as

Webster Dictionary

1. Ace(noun)

   a unit; a single point or spot on a card or die; the card or die so marked; as, the ace of diamonds

2. Ace(noun)

   hence: A very small quantity or degree; a particle; an atom; a jot

• aasAfrikaans
• آص: واحِد فِي وَرَق الشَدَّهArabic
• асBulgarian
• ásPortuguese (BR)
• esoCzech
• das AsGerman
• esDanish
• άσος (χαρτί τράπουλας)Greek
• asSpanish
• äss (kaardimängus)Estonian
• آسFarsi
• ässäFinnish
• asFrench
• קְלָף אַסHebrew
• इक्काHindi
• asCroatian
• ász (kártyában)Hungarian
• kartu asIndonesian
• ásIcelandic
• assoItalian
• エースJapanese
• (카드) 에이스Korean
• tūzasLithuanian
• dūzisLatvian
• daun satMalay
• aasDutch
• essNorwegian
• asPolish
• آسPersian
• ټكي: خال، توس ( دلولو په قطعو كې ): هغه نو مره چې په يوه وار وګټل شيPashto
• ásPortuguese
• asRomanian
• тузRussian
• esoSlovak
• asSlovenian
• kecSerbian
• essSwedish
• ไพ่หนึ่งแต้มThai
• asTurkish
• (紙牌中的)ACE牌Chinese (Trad.)
• тузUkrainian
• تاش میں چڑیا کا یکہUrdu
• quân átVietnamese
• (紙牌中的)一Chinese (Simp.)