bun

1 of 2

noun (1)

ˈbən 

1

: a sweet or plain small bread

especially : a round roll

2

: a knot of hair shaped like a bun

3

buns plural : buttocks

bun

2 of 2

noun (2)

: load sense 4

Synonyms of bun

Noun (1)

• cheeks
• tail
• bum
• seat
• rump

Examples of bun in a Sentence

Noun (1)

an exercise to firm your buns

Recent Examples on the Web

Noun

The Real Housewives of Beverly Hills alum wore her hair slicked back in a low bun, dark black eyeliner to bring out her eyes, and a light pink lip. —Ingrid Vasquez, PEOPLE, 19 May 2026

Hayek Pinault’s hair was tossed up into a slick high bun by stylist Miguel Martin Perez, with makeup provided by artist Wendy Rose. —Julia Teti, Footwear News, 18 May 2026

Take on the Main Street Monster Burger, three 16-ounce patties on a giant bun. —Tara Massouleh McCay, Southern Living, 15 May 2026

Staff deliver hot cinnamon buns with honeydew from the local Spoon and Key Market, sandwiches piled high with barbecue chicken, and after the final snorkel session, adult beverages on the way back to shore. —Laura Dannen Redman, Robb Report, 14 May 2026

Word History

Etymology

Noun (1)

Middle English bunne

Noun (2)

perhaps from bun entry 1

First Known Use

Noun (1)

14th century, in the meaning defined at sense 1

Noun (2)

1898, in the meaning defined above

Phrases Containing bun

• have a bun in the oven
• iced bun
• sticky bun

Rhymes for bun

• done
• dun
• fun
• gun
• hun
• jun
• none
• nun
• one
• pun
• run
• shun

Kids Definition

bun

noun

ˈbən

1

: a sweet or plain small bread

especially : a round roll

2

: a knot of hair shaped like a bun

Medical Definition

BUN

noun

ˌbē-ˌyü-ˈen 

: the concentration of nitrogen in the form of urea in the blood