Dictionary.com
definitions
  • synonyms

bun2

[buhn]
See more synonyms for bun on Thesaurus.com
Idioms
  1. have a bun on, Slang. to be intoxicated: Everyone at the party seemed to have a bun on.
Show More

Origin of bun2

First recorded in 1900–05; of uncertain origin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for have a bun on

bun

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

Word Origin

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

Word Origin and History for have a bun on

bun

n.

late 14c., origin obscure, perhaps from Old French buignete "a fritter," originally "boil, swelling," diminutive of buigne "swelling from a blow, bump on the head," from a Germanic source (cf. Middle High German bunge "clod, lump"), or from Gaulish *bunia (cf. Gaelic bonnach). Spanish buñelo "a fritter" apparently is from the same source. Of hair coiled at the back of the head, first attested 1894. To have a bun in the oven "be pregnant" is from 1951.

The first record of buns in the sense of "male buttocks" is from 1960s, perhaps from a perceived similarity; but bun also meant "tail of a hare" (1530s) in Scottish and northern England dialect and was transferred to human beings (and conveniently rhymed with nun in ribald ballads). This may be an entirely different word; OED points to Gaelic bun "stump, root."

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

have a bun on in Medicine

BUN

abbr.
  1. blood urea nitrogen
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.