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

Savannah detailed her experience with liposuction, a cosmetic enhancement that removes fat from and contours specific areas of the body, such as the stomach, hips, thighs, buttocks, arms or neck, per Mayo Clinic. —Catherine Santino, People.com, 26 Aug. 2025

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

Soon after, Montana shot through the front door, with one of the rounds grazing the man in the buttocks. —Robert Salonga, Mercury News, 15 Aug. 2025

This means full nudity is allowed at some spots, including Pirate’s Cove in San Luis Obispo County, while rules against exposing breasts or buttocks are enforced in other areas. —Angela Rodriguez, Sacbee.com, 10 Aug. 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