ace

noun
\ˈās \

Definition of ace 

(Entry 1 of 5)

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

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

within an ace of

: on the point of : very near to came within an ace of winning

ace

verb
aced; acing

Definition of ace (Entry 2 of 5)

transitive verb

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

Definition of ace (Entry 3 of 5)

: of first or high rank or quality an ace mechanic

Ace

trademark

Definition of Ace (Entry 4 of 5)

used for a bandage with elastic properties

Definition of ACE (Entry 5 of 5)

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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Examples of ace in a Sentence

Noun

She won the match by scoring more than 30 aces. took a few lessons with a tennis ace to improve his backhand

Verb

She aced her entrance exams. He aced his annual physical. He aced his opponent on the last point of the match.
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Recent Examples on the Web: Noun

Harvey, who previously emerged as a revelation for the New York Mets, owns a 5.39 ERA over that same span, making him little more than a reclamation project rather than a $200 million ace. Jared Diamond, WSJ, "The Best Free-Agent Class in Baseball History Has Lost Its Luster," 7 Nov. 2018 As revealed at the end of Infinity War, Captain Marvel represents Nick Fury’s ace in the hole and the last hope against Thanos and his universe-shattering cull. Alex Abad-santos, Vox, "Captain Marvel and the future of the Avengers, explained," 18 Sep. 2018 Isner had 113 aces in that match and Mahut hit 103. Mattias Karen, chicagotribune.com, "Guido Pella stuns No. 3 seed Marin Cilic at Wimbledon; Novak Djokovic and Rafael Nadal advance," 5 July 2018 Isner had 113 aces in that match and Mahut hit 103. Houston Chronicle, "Novak Djokovic, Rafael Nadal advance at Wimbledon," 5 July 2018 There are a lot of options to choose from, including a few aces taking the mound, and some offensive stacks with plenty of upside. Mike Barner, SI.com, "MLB DFS Plays for June 29," 29 June 2018 The final score was 11-5, but the most important statistic belonged to a Dodgers ace pitching for only the third time in two months. Bill Plaschke, latimes.com, "This Clayton Kershaw should be good enough for Dodgers," 29 June 2018 After looking for more out of the team's pitching as late as mid-May, Hickman and his staff helped develop Wynn into a bona fide ace. Curt Hogg, Milwaukee Journal Sentinel, "For the Wynn: Whitnall junior named All-Suburban Softball Player of the Year. Here's the rest of the team.," 22 June 2018 The promotion of Stevo to our first-ever GM of pop/rock A&R in Nashville recognizes his fantastic accomplishments as an ace A&R exec, as well as the vitality and importance of the city as a diverse, genre-spanning repertoire center. Lilly Milman, Billboard, "Steve Robertson Named General Manager/SVP of Pop-Rock A&R at Atlantic Records Nashville," 12 July 2018

Recent Examples on the Web: Verb

Oliveira has shared four key tips for acing the online vintage hunt. Bianca Nieves, Glamour, "Passport Vintage Is Fashion People's Best-Kept Secret for Vintage Denim," 21 Aug. 2018 Best for Stomach Sleepers Pacific Coast Double DownAround Soft This pillow aced all lab tests, from multiple washings to withstanding weight, but testers were split on whether this combo of down and feathers was soft enough. The Good Housekeeping Institute, Good Housekeeping, "The Best Pillows to Help You Sleep Like a Baby," 12 Jan. 2018 Here are the guys acing summer style right now at the Wimbledon 2018 tournament. The Editors Of Gq, GQ, "Wimbledon 2018: What Stylish Guys Are Wearing to the Best-Dressed Tennis Tournament," 3 July 2018 Aidan Doust of Marshfield, a Quincy College student, has aced his final project for a course in aquaculture. BostonGlobe.com, "Tea by the sea, Korean peace medals, and $2,000 to fight hunger," 13 July 2018 Google has aced transcribing human speech for its AI to parse, and creating a human-sounding robot voice to respond. Aaron Pressman, Fortune, "Data Sheet—Google's Duplex AI Proves Its Powers and Limitations," 28 June 2018 The other is a high achiever who aces tests and thinks the homework her teacher assigns is too easy. Dana Goldstein, New York Times, "Educators Turn to Programs for Top Students to Narrow the ‘Excellence Gap’," 25 June 2018 Imagine my surprise when this dryer delivered a fast, pretty blowout and aced our lab tests. Jessica Teich, USA TODAY, "The best hair styling tools of 2018," 1 May 2018 If most companies ace the profit test and their CEOs downplay the potential fallout from rising trade tensions, 401(k)s that have been languishing could get a boost as stocks move higher on the upbeat earnings news. Adam Shell, USA TODAY, "How 401(k) investors can profit from strong earnings season on Wall Street," 13 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ace.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ace

Noun

14th century, in the meaning defined at sense 1a

Verb

1923, in the meaning defined at sense 1

Adjective

1926, in the meaning defined above

History and Etymology for ace

Noun

Middle English as, borrowed from Anglo-French, going back to Latin ass-, ās "copper money piece (at first a pound, but progressively reduced to a half-ounce), pound unit of weight, unit," of uncertain origin

Note: The word ās has been compared within Latin to asser "wooden beam, pole, post" (generalized from a plural asserēs, from a singular *assis?) and assis, axis (by hypercorrection?) "plank, board," though any relationship is far from certain. A loanword from Etruscan?

Adjective

derivative of ace entry 1

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Learn More about ace

Dictionary Entries near ace

accustom oneself to

AC/DC

Ace

ace

ACE

-acea

-aceae

Statistics for ace

Last Updated

17 Nov 2018

Look-up Popularity

Time Traveler for ace

The first known use of ace was in the 14th century

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More Definitions for ace

ace

noun

English Language Learners Definition of ace

 (Entry 1 of 2)

: a playing card with one large figure in its center that can be the card with either the highest or lowest value

: a person who is very skilled at something

: a point scored on a serve that an opponent fails to hit in tennis

ace

verb

English Language Learners Definition of ace (Entry 2 of 2)

: to earn a very high grade on (an examination) : to get a grade of A on (an examination) : to perform very well on (a test or challenge)

: to score an ace against (an opponent in tennis)

: to score an ace on (a hole in golf)

ace

noun
\ˈās \

Kids Definition of ace

 (Entry 1 of 2)

1 : a playing card with one figure in its center

2 : expert entry 2 a flying ace

ace

adjective

Kids Definition of ace (Entry 2 of 2)

: of the very best kind an ace reporter

Ace

trademark
\ˈās \

Medical Definition of Ace 

(Entry 1 of 2)

used for a bandage with elastic properties

Medical Definition of ACE (Entry 2 of 2)

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