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

The fourth victim was shot in the buttocks and was transported to the hospital by private vehicle and is expected to survive, police said. —Briauna Brown, CBS News, 9 June 2026

Police allege Berrios-Otero touched the victims in their groin and buttocks area in a secluded area of a daycare classroom. —Justin Muszynski, Hartford Courant, 3 June 2026

The Sandusky, Ohio, Police Department tells PEOPLE Marquez Williams approached a transgender woman from behind, grabbed her skirt and pulled down her clothing, revealing her buttocks and genitals, at the Cedar Point amusement park on May 25. —Colson Thayer, PEOPLE, 2 June 2026

Another local court case involved two adult Boy Scout troop leaders who, during a camp-out, branded their Scouts on the buttocks with a red-hot coat hanger that had been shaped like male genitals. —Peter Hessler, New Yorker, 31 May 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