Definition of ace
(Entry 1 of 7)
1a
: a die face marked with one spot
b
: a playing card marked in its center with one pip
c
: a domino end marked with one spot
2
: a very small amount or degree : particle
3
: a point scored especially on a service (as in tennis or handball) that an opponent fails to touch
4
: a golf score of one stroke on a hole
also
: a hole made in one stroke
5
: a combat pilot who has brought down at least five enemy airplanes
6a
: a person who excels at something
a computer ace
b
: the best pitcher on a baseball team
the ace of the staff
ace in the hole
within an ace of
1
: an ace dealt face down to a player (as in stud poker) and not exposed until the showdown
2
: an effective and decisive argument or resource held in reserve
: on the point of : very near to
came within an ace of winning
ace
verb
aced; acing
Definition of ace (Entry 2 of 7)
1
: to score an ace against (an opponent)
2
: to make (a hole in golf) in one stroke
3
: to gain a decisive advantage over : defeat
—usually used with out
4a
: to earn a high grade on (something, such as an examination)
especially
: to get an A on
b
: to perform extremely well in
he aced every subject
ace
adjective (1)Definition of ace (Entry 3 of 7)
: of first or high rank or quality
an ace mechanic
ace
noun (2)
plural aces
Definition of ace (Entry 4 of 7)
: an asexual person (see asexual sense 3b)
Like many other aces and aros, I grew up thinking I was broken. I was 19 before I heard the words "asexual" or "aromantic," before I found out that there were other people in the world like me.— Mikayla Micomonaco
ace
adjective (2)Definition of ace (Entry 5 of 7)
: asexual
But ace individuals often still feel romantic attraction toward others, as well as a drive to cultivate intimate, loving relationships—just without an intrinsic interest in pursuing the sexual aspect.— Taryn Deoilers
Ace
trademarkDefinition of Ace (Entry 6 of 7)
—used for a bandage with elastic properties
ACE
abbreviationDefinition of ACE (Entry 7 of 7)
1
American Council on Education
2
\
ˌā-(ˌ)sē-ˈē
, ˈās-
\
angiotensin converting enzyme
The ACE inhibitors are designer molecules developed specifically to attach to their target enzyme and prevent it from activating angiotensin. Virtually the only thing these drugs do in the body is to interact with ACE. However, ACE is not a very specific enzyme; it acts on hormones besides angiotensin. — Harvard Medical Health Letter
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Merriam-Webster unabridged
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Time Traveler for ace
The first known use of ace was in the 14th century
See more words from the same century