Dictionary.com

bun

1
[ buhn ]
/ bʌn /
Save This Word!

noun

any of a wide variety of variously shaped bread rolls, usually leavened and slightly sweetened or plain, sometimes containing spices, dried currants, etc.
hair gathered into a round coil or knot at the nape of the neck or on top of the head in certain coiffures.
buns, Slang. the buttocks.

QUIZZES

QUIZ YOURSELF ON THE MANY TYPES OF NOUNS

They're everywhere you turn, but can you identify the 10 types of nouns easily? This quiz will test your mettle against singular, plural, concrete, abstract, common, proper, collective, compound, countable, and uncountable nouns!
Question 1 of 7
Shoelaces, rainbow, toothpaste, and haircuts are all what type of noun?

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of bun

1
1325–75; Middle English bunne, possibly of Romance origin; see also buñuelo

Definition for bun (2 of 3)

bun2
[ buhn ]
/ bʌn /

Idioms

have a bun on, Slang. to be intoxicated: Everyone at the party seemed to have a bun on.

Origin of bun

2
First recorded in 1900–05; of uncertain origin

Definition for bun (3 of 3)

BUN

blood urea nitrogen: the concentration of nitrogen in the blood in the form of urea, indicating kidney function.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for bun

British Dictionary definitions for bun

bun
/ (bʌn) /

noun

a small roll, similar to bread but usually containing sweetening, currants, spices, etc
any of various types of small round sweet cakes
a hairstyle in which long hair is gathered into a bun shape at the back of the head
have a bun in the oven slang to be pregnant

Word Origin for bun

C14: of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for bun

BUN

abbr.

blood urea nitrogen
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
See Today's Synonym