bun1

[buhn] /bʌn/
noun
1.
any of a wide variety of variously shaped bread rolls, usually leavened and slightly sweetened or plain, sometimes containing spices, dried currants, etc.
2.
hair gathered into a round coil or knot at the nape of the neck or on top of the head in certain coiffures.
3.
buns, Slang. the buttocks.
Origin
1325-75; Middle English bunne, of obscure origin

bun2

[buhn] /bʌn/
Idioms
1.
have a bun on, Slang. to be intoxicated:
Everyone at the party seemed to have a bun on.
Origin
1900-05; of uncertain origin

BUN

1.
blood urea nitrogen: the concentration of nitrogen in the blood in the form of urea, indicating kidney function.
British Dictionary definitions for bun

bun

/bʌn/
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.
(slang) have a bun in the oven, to be pregnant
Word Origin
C14: of unknown origin
Word Origin and History for 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."

bun in Medicine

BUN abbr.
blood urea nitrogen

Slang definitions & phrases for bun

bun

noun
  1. A state of drunkenness; alcoholic exhilaration: A bun is a light jag (1900+)
  2. The buttocks; bum •Originally ''the tail of a hare, scut''; first seen applied to persons in Scottish poetry (1530s+)
  3. A single buttock; cheek: a boil on my left bun (1970s+)
Related Terms

cheese bun, crumb-bun, have a bun in the oven, have a bun on


Related Abbreviations for bun

BUN

blood urea nitrogen