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

• cheeks
• seat
• bum
• 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

Your glutes are the muscles that make up your buttocks area. —Jakob Roze, Health, 18 Aug. 2025

According to the relative, the child appeared to be in pain and his legs and buttocks were covered in bruises. —Gabrielle Rockson, People.com, 8 Aug. 2025

Bell, 44, also was just wearing a pair of blue knee socks, and her husband lightly censored the image by pasting a red square over her buttocks. —Martha Ross, Mercury News, 16 July 2025

By that point, the two bite marks appeared on her buttock, and it was confirmed as a bite from a brown recluse spider. —Alyce Collins, MSNBC Newsweek, 11 July 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