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 of buttock

• cheeks
• bum
• seat
• tail
• rump

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

While first degree burns — which impact the outlet layer of skin — can generally be cared for at home, UCHealth advises seeking medical care for any burns that are more severe, such as ones that are more than three inches long, or on the hands, feet, face, groin or buttocks. —Cara Lynn Shultz, PEOPLE, 7 Nov. 2025

Use your hand to draw your left heel close to your buttocks. —Gerard Hartmann, Outside, 3 Nov. 2025

Around the same time, a rash can appear on the hands and feet, and sometimes on the buttocks, legs or arms. —Katia Hetter, CNN Money, 29 Oct. 2025

Five cops have been suspended after a prisoner allegedly smuggled a gun in his buttocks and shot another prisoner in the back of a police transport van in Westchester County, authorities said Thursday. —Joseph Wilkinson, Mercury News, 24 Oct. 2025

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