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

Serve them on burger buns or wrapped in crisp lettuce leaves. — Olivia McIntosh, Martha Stewart, 23 July 2026

The cafeteria-style trays and displays here are loaded with red-bean buns, bacon epi breads and other sweet and savory handheld snacks that’d fit right in at a park function. — Miguel Otárola, Denver Post, 21 July 2026

The sweet buns with vanilla custard are a particular speciality, and the ice cream sundae has been a local staple for 80 years. — Jaymi McCann, TheWeek, 21 July 2026

Alicia Keys’ side bang makes a strong case for sticking to a few statement braids, especially with this simple yet stunning updo, which features a big braid wrapped into a bun. — Omenaa Boakye, InStyle, 19 July 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