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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 of bur1
1300-1350
1300-50; Middle English burre, apparently cognate with Danish burre, Norwegian, Swedish borre bur

bur2

[bur] /bɜr/
noun
1.
burr2 .

Bur.

1.

bur.

1.

burr1

or bur (for defs 1, 3)

[bur] /bɜr/
noun
1.
Also, buhr. a protruding, ragged edge raised on the surface of metal during drilling, shearing, punching, or engraving.
2.
a rough or irregular protuberance on any object, as on a tree.
3.
a small, hand-held, power-driven milling cutter, used by machinists and die makers for deepening, widening, or undercutting small recesses.
4.
a lump of brick fused or warped in firing.
verb (used with object)
5.
to form a rough point or edge on.
6.
Origin
1605-15; spelling variant of bur1

burr2

or bur

[bur] /bɜr/
noun
1.
a washer placed at the head of a rivet.
2.
a blank punched out of a piece of sheet metal.
Origin
1375-1425; late Middle English burrewez (plural), buruhe circle, variant of brough round tower; see broch
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for bur
Contemporary Examples
Historical Examples
  • Eli's been drunk some, bur his girls are really a good deal of help.

    In the Valley Harold Frederic
  • I'll do ellythik you like in reasol, M'ria—(hic)—bur I won't come 'ome.

  • The fruit of red gum is a bur, midway in appearance and size between the sycamore ball and the chestnut bur.

    American Forest Trees Henry H. Gibson
  • The shearing-off of the bur is a source of great danger to the workmen.

    Life in a Railway Factory Alfred Williams
  • We fall asleep to the accompaniment of the tiny piping of the little people in bur garden.

    The House in Good Taste Elsie de Wolfe
  • In most of its range it is associated with the bur oak from which it is not commonly separated.

    Trees of Indiana Charles Clemon Deam
  • Soon Grunty came upon a cluster of the three-sided nuts, clinging inside a bur that the frost had split open.

    The Tale of Grunty Pig Arthur Scott Bailey
  • The bur oak is a rugged, ragged tree, compared with the white oak.

    Trees Worth Knowing Julia Ellen Rogers
  • The largest acorn I know is the fruit of the bur oak, and it is borne in a mossy cup, indeed.

    Trees Every Child Should Know Julia Ellen Rogers
British Dictionary definitions for bur

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

Bur.

abbreviation
1.
Myanmar (Burma)

burr1

/bɜː/
noun
1.
a small power-driven hand-operated rotary file, esp for removing burrs or for machining recesses
2.
a rough edge left on a workpiece after cutting, drilling, etc
3.
a rough or irregular protuberance, such as a burl on a tree
4.
(Brit) a burl on the trunk or root of a tree, sliced across for use as decorative veneer
noun, verb
5.
a variant spelling of bur
verb (transitive)
6.
to form a rough edge on (a workpiece)
7.
to remove burrs from (a workpiece) by grinding, filing, etc; deburr
Word Origin
C14: variant of bur

burr2

/bɜː/
noun
1.
(phonetics) an articulation of (r) characteristic of certain English dialects, esp the uvular fricative trill of Northumberland or the retroflex r of the West of England
2.
a whirring sound
verb
3.
to pronounce (words) with a burr
4.
to make a whirring sound
Word Origin
C18: either special use of bur (in the sense: rough sound) or of imitative origin

burr3

/bɜː/
noun
1.
a washer fitting around the end of a rivet
2.
a blank punched out of sheet metal
Word Origin
C16 (in the sense: broad ring on a spear): variant of burrow (in obsolete sense: borough)

burr4

/bɜː/
noun
1.
short for buhrstone
2.
a mass of hard siliceous rock surrounded by softer rock
Word Origin
C18: probably from bur, from its qualities of roughness

Burr

/bɜː/
noun
1.
Aaron. 1756–1836, US vice-president (1800–04), who fled after killing a political rival in a duel and plotted to create an independent empire in the western US; acquitted (1807) of treason
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 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).

burr

n.

"rough sound of the letter -r-" (especially that common in Northumberland), 1760, later extended to "northern accented speech" in general. Possibly the sound of the word is imitative of the speech peculiarity itself, or it was adapted from one of the senses of bur (q.v.), perhaps from the phrase to have a bur in (one's) throat (late 14c.), which was a figure of speech for "feel a choking sensation, huskiness." OED says the Scottish -r- is a lingual trill, not a true burr.

Online Etymology Dictionary, © 2010 Douglas Harper
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bur 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.

burr (bûr)
n.
Variant of bur.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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bur 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 bur

BUR

1.
Burbank Glendale Pasadena Airport
2.
Myanmar (international vehicle ID)

bur.

1.
bureau
2.
buried

Bur.

1.
Burma
2.
Burmese
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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