buttock

noun

but·​tock ˈbə-tək 

 also  -(ˌ)täk

1

: the back of a hip that forms one of the fleshy parts on which a person sits

2

buttocks plural

a

: the seat of the body

b

: rump sense 1a

Synonyms

• backside
• behind
• booty [slang]
• bootie
• bottom
• breech
• bum
• buns
• butt
• caboose
• can
• cheeks
• derriere
• derrière
• duff
• fanny
• fundament
• hams
• haunches
• heinie [slang]
• hunkers
• keister [slang]
• keester
• nates
• posterior
• rear
• rear end
• rump
• seat
• tail
• tail end
• tush [slang]

Examples of buttock in a Sentence

she slipped in the mud puddle and hit the ground square on her buttocks

Recent Examples on the Web

The condition, which is not contagious, usually appears in warm, wet parts of the body, such as armpits, under the breast, buttocks and even between butt cheeks. —Wendy Grossman Kantor, People.com, 9 Jan. 2025

The camera lingers on Mr. Whiting’s buttocks and registers a flash of Ms. Hussey’s breasts. —Alex Traub, New York Times, 30 Dec. 2024

Schar and Duran had stretched for a loose ball and the Newcastle centre-half had slid in to win it, with Duran first catching him on the buttock and then in the small of the back. —George Caulkin, The Athletic, 27 Dec. 2024

The loose skin occurs in areas of the body where fat had been previously stored, most likely the buttocks, stomach, tights, arms, and face. —Dominique Fluker, Essence, 5 Dec. 2024

Word History

Etymology

Middle English buttok — more at butt entry 1

First Known Use

13th century, in the meaning defined at sense 1

Kids Definition

buttock

noun

but·​tock ˈbət-ək 

1

: the back of the hip which forms one of the fleshy parts on which a person sits

2

plural

a

: the seat of the body

b

: rump sense 1a

Medical Definition

buttock

noun

but·​tock ˈbət-ək 

1

: the back of a hip that forms one of the fleshy parts on which a person sits

2

buttocks plural : the seat of the body

also : the corresponding part of a quadruped : rump