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bur1

[bur] /bɜr/
noun
1.
a rough, prickly case around the seeds of certain plants, as the chestnut or burdock.
2.
any bur-bearing plant.
3.
something that adheres like a bur.
4.
Machinery, burr1 (defs 1, 3).
5.
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.
6.
Surgery. a cutting tool resembling that of a dentist, used for the excavation of bone.
verb (used with object), burred, burring.
7.
to extract or remove burs from.
Origin
1300-1350
1300-50; Middle English burre, apparently cognate with Danish burre, Norwegian, Swedish borre bur

bur2

[bur] /bɜr/
noun
1.
burr2 .
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for burs

bur

/bɜː/
noun
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.
a variant spelling of burr3 , burr4
verb burs, burring, burred
6.
(transitive) to remove burs from
Also (for senses 1–4) burr
Word Origin
C14: probably of Scandinavian origin; compare Danish burre bur, Swedish kardborre burdock

BUR

abbreviation
1.
Myanmar (international car registration)
Word Origin
from Burma
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
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Word Origin and History for burs

bur

n.

"prickly seed vessel of some plants," c.1300, burre, from a Scandinavian source (cf. Danish borre, Swedish hard-borre, Old Norse burst "bristle"), from PIE *bhars- (see bristle (n.)). Transferred 1610s to "rough edge on metal," which might be the source of the sense "rough sound of the letter -r-" (see burr).

Online Etymology Dictionary, © 2010 Douglas Harper
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burs in Medicine

bur or burr (bûr)
n.

  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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burs in Science
bur also burr
  (bûr)   
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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Related Abbreviations for burs

BUR

  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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6
8
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