noun (1)
\ ˈbək How to pronounce buck (audio) \
plural bucks

Definition of buck

 (Entry 1 of 6)

1a informal
(1) : dollar sense 3b I only had a buck in my pocket. Dinner cost twenty bucks.
(2) : a sum of money especially to be gained make a quick buck also : money usually used in plural making the big bucks
b US slang used in place of "hundred" in combination with other numbers … as much at ease going 40 in First as it is doing a buck-twenty [=120 miles an hour] down the freeway …— Hot Rod
2 or plural buck : a male animal especially : a male deer or antelope
3a : a male human being : man
b : a dashing fellow : dandy
4 or plural buck : antelope
5 : buckskin also : an article (such as a shoe) made of buckskin
6 [short for sawbuck sawhorse]
a : a supporting rack or frame
b : a short thick leather-covered block for gymnastic vaulting


bucked; bucking; bucks

Definition of buck (Entry 2 of 6)

intransitive verb

1 of a horse or mule : to spring into the air with the back arched
2 : to charge against something
3a : to move or react jerkily
b : to refuse assent : balk
4 : to strive for advancement sometimes without regard to ethical behavior bucking for a promotion

transitive verb

1a : oppose, resist bucking the system
b archaic : butt entry 3
2 : to throw or dislodge (a rider) by bucking
3 : to move or charge into bucking a headwind
4a : to pass especially from one person to another
b : to move or load (heavy or cumbersome objects) especially with mechanical equipment


noun (2)

Definition of buck (Entry 3 of 6)

: an act or instance of bucking



Definition of buck (Entry 4 of 6)

: stark, completely buck naked


noun (3)

Definition of buck (Entry 5 of 6)

1 : responsibility used especially in the phrases pass the buck and the buck stops here
2 : an object formerly used in poker to mark the next player to deal broadly : a token used as a mark or reminder



Definition of buck (Entry 6 of 6)

: of the lowest grade within a military category a buck private

Other Words from buck


bucker noun

Examples of buck in a Sentence

Verb the car bucked and stalled bucked the trend to outdo everyone else and just wore the same clothes they had in previous years

First Known Use of buck

Noun (1)

before the 12th century, in the meaning defined at sense 2


1750, in the meaning defined at transitive sense 1b

Noun (2)

circa 1877, in the meaning defined above


1928, in the meaning defined above

Noun (3)

1865, in the meaning defined at sense 2


1918, in the meaning defined above

History and Etymology for buck

Noun (1)

Middle English, from Old English bucca stag, he-goat; akin to Old High German boc he-goat, Middle Irish bocc


origin unknown

Noun (3)

short for earlier buckhorn knife


probably from buck entry 1

Learn More About buck

Time Traveler for buck

Time Traveler

The first known use of buck was before the 12th century

See more words from the same century

Dictionary Entries Near buck

buchu camphor



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Statistics for buck

Cite this Entry

“Buck.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buck. Accessed 8 Aug. 2022.

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More Definitions for buck


\ ˈbək How to pronounce buck (audio) \

Kids Definition of buck

 (Entry 1 of 2)

1 : the male of an animal (as a deer or rabbit) the female of which is called doe
2 : dollar The cost is ten bucks.


bucked; bucking

Kids Definition of buck (Entry 2 of 2)

1 : to spring or jump upward with head down and back arched The rider nearly fell when the horse suddenly bucked.
2 : to charge or push against Our boat was bucking the waves.
3 : to go against : oppose We decided to buck the trend and wear ties.
buck up
: to become more confident

Buck biographical name (1)

\ ˈbək How to pronounce Buck (audio) \

Definition of Buck

 (Entry 1 of 2)

Linda B. 1947–     American biologist


biographical name (2)

Definition of Buck (Entry 2 of 2)

Pearl 1892–1973 née Sydenstricker \ ˈsī-​dᵊn-​ˌstri-​kər How to pronounce Buck (audio) \ American novelist

More from Merriam-Webster on buck

Nglish: Translation of buck for Spanish Speakers

Britannica English: Translation of buck for Arabic Speakers


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