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 inmate walks back to his place in line, putting his hand on his buttocks for a moment. —Gillian Stawiszynski, Cincinnati Enquirer, 21 Nov. 2025

His most recent offseason was injury-plagued, with two months of recovery after spraining his knee ligament during the Lakers' first-round playoff loss to Minnesota followed by a painful bout of sciatica — pain in the nerves running from the buttocks and down the back of the legs. —CBS News, 19 Nov. 2025

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

If possible, use one or both hands to gently pull your heel closer to your buttock, stretching as far as your flexibility allows. —Gerard Hartmann, Outside, 3 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