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Definition of BUN
1. Noun. Small rounded bread either plain or sweet.
Generic synonyms: Bread, Breadstuff, Staff Of Life
Specialized synonyms: Tea Bread, Frankfurter Bun, Hotdog Bun, Hamburger Bun, Hamburger Roll, Brioche, Crescent Roll, Croissant, Hard Roll, Vienna Roll, Soft Roll, Kaiser Roll, Parker House Roll, Clover-leaf Roll, Onion Roll, Coffee Roll, Sweet Roll, Bagel, Beigel
Definition of BUN
1. n. A slightly sweetened raised cake or bisquit with a glazing of sugar and milk on the top crust.
Definition of BUN
1. Initialism. Blood, urea, nitrogen. ¹
2. Noun. A small bread roll, often sweetened or spiced. ¹
3. Noun. A tight roll of hair worn at the back of the head. ¹
4. Noun. (slang British) A drunken spree. ¹
5. Noun. (Internet slang) A newbie. ¹
6. Noun. (dialect obsolete) A squirrel or rabbit. ¹
7. Verb. (UK slang) To smoke cannabis. ¹
¹ Source: wiktionary.com
Definition of BUN
1. a small bread roll [n -S]
Medical Definition of BUN
1. Blood urea nitrogen (BUN) is a metabolic by product (in the liver) from the breakdown of blood, muscle and protein. Blood urea nitrogen can be measured from a simple venipuncture specimen. Abnormal elevation in the blood urea nitrogen can indicate renal disease, dehydration, congestive heart failure, gastrointestinal bleeding, starvation, shock or urinary tract obstruction (by tumour or prostate gland). Low BUN level can indicate liver disease, malnutrition or a low protein diet. Normal BUN levels should be between 7 and 20 mg/dl (milligrams per decilitre). (27 Sep 1997)