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

Mongolian spots: Usually affecting the buttocks or lower back, these look like bruises and are light or dark blue or grey. —Mark Gurarie, Health, 6 Aug. 2025

That same night, Tabb touched a second recruit’s buttocks, according to interviews with police investigators and court records. —María Inés Zamudio, ProPublica, 10 June 2025

The gluteus medius muscle, a smaller buttock muscle located underneath the gluteus maximus, is the primary muscle supporting the pelvis. 4. —Aubrey Bailey, Verywell Health, 5 June 2025

What to consider: Fabric can be see-through around the buttocks area. —Elizabeth Mitchell Kadar, Glamour, 2 June 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