\ ˈās How to pronounce ace (audio) \

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
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


aced; acing

Definition of ace (Entry 2 of 7)

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


adjective (1)

Definition of ace (Entry 3 of 7)

: of first or high rank or quality an ace mechanic


adjective (2)

Definition of ace (Entry 4 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
plural aces

Definition of ace (Entry 5 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

Definition of Ace (Entry 6 of 7)

used for a bandage with elastic properties

Definition of ACE (Entry 7 of 7)

1 American Council on Education
2 \ ˌā-​(ˌ)sē-​ˈē How to pronounce ACE (audio) , 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 (1) 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 Facing either a trade to another team by a new owner or retirement, Costner's 40-year-old former ace flashes back to his relationship with the woman (Kelly Preston) who's now walking out of his life for an overseas job. Julie Hinds, Freep.com, "We named Michigan's 50 most essential movies. Here are 12 films that we missed.," 3 Jan. 2020 Now, Harbaugh must find a way to replace Partridge, the Wolverines' ace recruiter who has been hired to join Lane Kiffin's staff at Ole Miss on Thursday. Orion Sang, Detroit Free Press, "Michigan football must crush next hire to replace ace recruiter Chris Partridge," 2 Jan. 2020 K-Park’s Alia Williams and Libby Overmyer earned honorable mention honors as middle blockers in Class 5A. The senior LSU signee Alia Williams had 259 blocks, 235 digs, 85 blocks and 66 aces. Marcus Gutierrez, Houston Chronicle, "Volleyball: Four Humble ISD players named to all-state team," 31 Dec. 2019 Prince, 1999 Deluxe Edition (Rhino) When asked by Arsenio Hall about his mythic vault of unreleased music back in 2014, Prince was not prepared to dish on that ace up his sleeve. Ron Hart, Billboard, "These Are the Best Reissues of 2019," 19 Dec. 2019 The Gophers recorded 12½ blocks and nine service aces. Pioneer Press, Twin Cities, "Gophers volleyball makes Final Four with dominating win over Louisville," 14 Dec. 2019 Safety/special teams ace Brynden Trawick, who earlier in the week was activated from injured reserve, is active and will play for the first time since Week 2. Daniel Oyefusi, baltimoresun.com, "Ravens’ Marlon Humphrey, Marquise Brown active vs. Bills," 8 Dec. 2019 Player development ace Mike Gerrity has built a bond with Cedi Osman over the years, even going to visit him in Turkey during the off-season. Chris Fedor, cleveland, "Tristan Thompson, Cavaliers defend John Beilein after players anonymously question coaching methods: ‘I love coach Beilein’," 7 Dec. 2019 Faithful dog, World War I flying ace, song-and-dance man, Correia has the attitude for each shift in Snoopy’s persona. Matthew J. Palm, orlandosentinel.com, "A great production for good ol’ Charlie Brown | Review," 6 Dec. 2019 Recent Examples on the Web: Verb Students in Brian Mason’s class at Chugiak High School didn’t ace their big test last week. Matt Tunseth, Anchorage Daily News, "A Chugiak High teacher hunted a moose and brought it to school. Then things got interesting.," 15 Dec. 2019 For Kaepernick to play in the NFL, acing this type of workout is a bare requirement. BostonGlobe.com, "Colin Kaepernick’s workout on Saturday at a high school south of Atlanta.," 18 Nov. 2019 There will be of those to come — but Michigan did well in acing its first significant test. Orion Sang, Detroit Free Press, "Michigan basketball survives first test, rallies past Creighton, 79-69," 12 Nov. 2019 The 12th was the hole his grandpa, Dan, previously aced in 1989. Jace Frederick, Twin Cities, "For Eagan man, acing the 12th hole in Luck, Wis., is just a family tradition," 25 Oct. 2019 If a student does poorly on the math section, for example, but aces the other three sections, this change allows the student to retake only the math portion and keep the original scores in the other sections. Maddie Capron And Christina Zdanowicz, CNN, "Students will soon be able to retake specific sections of the ACT," 9 Oct. 2019 This clock also has battery backup and the company aced our customer service test. The Good Housekeeping Institute, Good Housekeeping, "American Innovative NeverLate Executive Alarm Clock," 14 Dec. 2011 Moore said, who aced the 120-yard, 9th hole with a pitching wedge and the uphill 125-yard, 16th with a 7-iron. Gary Curreri, sun-sentinel.com, "Lake Worth resident defies odds with 2 hole-in-ones in same round," 27 Nov. 2019 That blocking mistake set up a second third-and-long situation that Tagovailoa aced the first five times. Michael Casagrande | Mcasagrande@al.com, al, "Extra observations, some context to key moments in Alabama win at Mississippi State," 18 Nov. 2019

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 (1)

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


1923, in the meaning defined at sense 1

Adjective (1)

1926, in the meaning defined above

Adjective (2)

2009, in the meaning defined above

Noun (2)

2008, in the meaning defined above

History and Etymology for ace

Noun (1)

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 (1)

derivative of ace entry 1

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Time Traveler for ace

Time Traveler

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

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Statistics for ace

Last Updated

13 Jan 2020

Cite this Entry

“Ace.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/ace%20in%20the%20hole. Accessed 20 January 2020.

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More Definitions for ace



English Language Learners Definition of ace

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


\ ˈās How to pronounce ace (audio) \

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

Kids Definition of ace (Entry 2 of 2)

: of the very best kind an ace reporter
\ ˈās How to pronounce Ace (audio) \

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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More from Merriam-Webster on ace

Thesaurus: All synonyms and antonyms for ace

Rhyming Dictionary: Words that rhyme with ace

Spanish Central: Translation of ace

Nglish: Translation of ace for Spanish Speakers

Britannica English: Translation of ace for Arabic Speakers

Comments on ace

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not to be intimidated or subdued

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