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buttock

American  
[buht-uhk] / ˈbʌt ək /

noun

  • buttocks
    plural
  1. Usually buttocks.

    1. (in humans) either of the two fleshy protuberances forming the lower and back part of the trunk.

    2. (in animals) the rump.

  2. Nautical. Sometimes buttocks. the aftermost portion of a hull above the water line and in front of the rudder, merging with the run below the water line.


buttock British  
/ ˈbʌtək /

noun

  1. either of the two large fleshy masses of thick muscular tissue that form the human rump See also gluteus

  2. the analogous part in some mammals

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of buttock

before 1000; Middle English buttok, Old English buttuc. See butt 1, -ock

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

ICE officials acknowledged that Ayala-Uribe died at the Victorville hospital while waiting for surgery for an abscess on his buttock.

From Los Angeles Times ● Nov. 22, 2025

He passed a concussion test before returning to the track though later said he was suffering knee and buttock pain.

From BBC ● Aug. 10, 2024

Surgically speaking, a BBL is basically fat grafting, in which fat is moved from one location to your body to your buttock area.

From Salon ● Apr. 29, 2023

British journalist Nigel Ely wrote a 2017 book about a chunk of Saddam’s left buttock that he pried off the statue.

From Seattle Times ● Apr. 8, 2023

Mr. Richard tried to help him get up and the pain shot up from his side and buttock to his head and eyes.

From "Half of a Yellow Sun" by Chimamanda Ngozi Adichie

Airlines measure capacity using something called an available seat mile, which is one mile flown by one seat, with or without buttocks.

From Barron's ● May 8, 2026

This nerve is the largest in your body, branching from the lower back through your hips, buttocks and down each leg.

From Science Daily ● Dec. 15, 2025

Video from the home, introduced as evidence in the trial, showed Frank Santangelo seeing his wife bleeding from injection sites on her buttocks and running to get material to clean them.

From Los Angeles Times ● Nov. 5, 2025

Non-surgical BBLs are one of the most high-risk procedures which involve filler being injected into the buttocks to make them bigger, more rounded or lifted.

From BBC ● Aug. 6, 2025

When he sat down, the metal chair disappeared beneath the spread of his buttocks, and Alex was surprised it could even take his weight.

From "Stormbreaker" by Anthony Horowitz

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