1 [bur]
a rough, prickly case around the seeds of certain plants, as the chestnut or burdock.
any bur-bearing plant.
something that adheres like a bur.
Machinery, burr1 ( defs 1, 3 ).
Dentistry. a rotary cutting tool usually of steel or other hard metal shaped into a shank and a head, for removing carious material from teeth and preparing cavities for filling.
Surgery. a cutting tool resembling that of a dentist, used for the excavation of bone.
verb (used with object), burred, burring.
to extract or remove burs from.

1300–50; Middle English burre, apparently cognate with Danish burre, Norwegian, Swedish borre bur

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2 [bur]
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
bur (bɜː)
1.  a seed vessel or flower head, as of burdock, having hooks or prickles
2.  any plant that produces burs
3.  a person or thing that clings like a bur
4.  a small surgical or dental drill
5.  burr a variant spelling of burr
vb , burs, burring, burred
6.  (tr) to remove burs from
[C14: probably of Scandinavian origin; compare Danish burre bur, Swedish kardborre burdock]

abbreviation for
Myanmar (international car registration)
[from Burma]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

"prickly seed vessel of some plants," c.1300, burre, from a Scandinavian source (cf. Dan. borre, Swed. hard-borre, O.N. burst "bristle"), from PIE *bhars- (see bristle). Transferred 1610s to "rough edge on metal," which may have been the source of the sense "rough sound
of the letter -r-" (see burr).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

bur or burr (bûr)

  1. A rotary cutting instrument used in dentistry for excavating decay, shaping cavity forms, and reducing tooth structure.

  2. A drilling tool for enlarging a trephine hole in the cranium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
bur also burr   (bûr)  Pronunciation Key 
A type of pseudocarp in which the outer surface possesses hooks or barbs. Burs become caught in the feathers or hair of animals, which then carry them away to disperse the seeds.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
  1. Burbank Glendale Pasadena Airport

  2. Myanmar (international vehicle ID)

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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