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

Investigators also revealed that within 30 minutes of the killings, Dambrosio allegedly entered a local coffee shop and slapped a female employee on the buttocks before driving to the deli to kill his parents. —Julia Bonavita, FOXNews.com, 8 Dec. 2025

This includes head coverings and sensitive areas such as breasts, groin, and the buttocks. —Zach Wichter, USA Today, 4 Dec. 2025

The alleged attacker, James Rizzo, 45, ran up to the 20-year-old woman on Broadway near Astor Place, slapped her head and buttocks, grabbed her hair, pushed her to the ground and then took off, the New York Police Department said. —Mason Leath, ABC News, 3 Dec. 2025

The inmate walks back to his place in line, putting his hand on his buttocks for a moment. —Gillian Stawiszynski, Cincinnati Enquirer, 21 Nov. 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