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

• backside
• behind
• booty [slang]
• bootie
• bottom
• breech
• bum
• buns
• butt
• caboose
• can
• cheeks
• derriere
• derrière
• duff
• fanny
• fundament
• hams
• haunches
• heinie [slang]
• hunkers
• keister [slang]
• keester
• nates
• posterior
• rear
• rear end
• rump
• seat
• tail
• tail end
• tush [slang]

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

Pain from sciatica can range from annoying to debilitating and affect the back, buttocks, back of the leg, and foot. —Cory Martin, Verywell Health, 3 Feb. 2025

Moments later, Bianca stripped her coat and revealed a sheet outfit that showed her buttocks and breasts. —Lea Veloso, StyleCaster, 2 Feb. 2025

The visual field of each print is almost entirely taken up by spread legs, muscled bellies, erect or semi-erect penises, yielding buttocks, and hands in motion. —Richard Meyer, Artforum, 1 Feb. 2025

Jailed in Denver, then set free On Jan. 24, 2024, Caudill was at a Denver Cares detox facility on Cherokee Street when a staff member called police and said Caudill had touched her buttocks without permission, according to an affidavit filed against Caudill. —Shelly Bradbury, The Denver Post, 26 Jan. 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