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

His investigation also found that Insogna was seen on a police cruiser camera putting her hand in the area of her buttocks multiple times as she was being taken to the department, according to the report. —Justin Muszynski, Hartford Courant, 7 Feb. 2026

The man was shot in the buttocks and arm and was taken to Advocate Christ Medical Center in Oak Lawn in good condition. —Adam Harrington, CBS News, 4 Feb. 2026

Kwoba still needs surgery to remove fragments from his buttocks and back thighs. —Larry Madowo, CNN Money, 4 Feb. 2026

Baboons will show their buttocks to others before walking away; the entire troop then departs. —Shayla Love, New Yorker, 4 Feb. 2026

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