bur

1
[ bur ]
/ bɜr /
|

noun

verb (used with object), burred, bur·ring.

to extract or remove burs from.

Origin of bur

1
1300–50; Middle English burre, apparently cognate with Danish burre, Norwegian, Swedish borre bur

Definition for bur (2 of 6)

bur

2
[ bur ]
/ bɜr /

noun


Definition for bur (3 of 6)

burr

1
[ bur ]
/ bɜr /

noun

Also buhr. a protruding, ragged edge raised on the surface of metal during drilling, shearing, punching, or engraving.
a rough or irregular protuberance on any object, as on a tree.
a small, handheld, power-driven milling cutter, used by machinists and die makers for deepening, widening, or undercutting small recesses.
a lump of brick fused or warped in firing.

verb (used with object)

to form a rough point or edge on.
Also bur (for defs 1, 3).

Origin of burr

1
First recorded in 1605–15; spelling variant of bur1

Definition for bur (4 of 6)

burr

2

or bur

[ bur ]
/ bɜr /

noun

a washer placed at the head of a rivet.
a blank punched out of a piece of sheet metal.

Origin of burr

2
1375–1425; late Middle English burrewez (plural), buruhe circle, variant of brough round tower; see broch

Definition for bur (5 of 6)

Definition for bur (6 of 6)

Bur.


Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bur

British Dictionary definitions for bur (1 of 8)

bur

/ (bɜː) /

noun

a seed vessel or flower head, as of burdock, having hooks or prickles
any plant that produces burs
a person or thing that clings like a bur
a small surgical or dental drill
a variant spelling of burr 3, burr 4

verb burs, burring or burred

(tr) to remove burs from
Also (for senses 1–4): burr

Word Origin for bur

C14: probably of Scandinavian origin; compare Danish burre bur, Swedish kardborre burdock

British Dictionary definitions for bur (2 of 8)

BUR

abbreviation for

Myanmar (international car registration)

Word Origin for BUR

from Burma

British Dictionary definitions for bur (3 of 8)

Bur.

abbreviation for

Myanmar (Burma)

British Dictionary definitions for bur (4 of 8)

Burr

/ (bɜː) /

noun

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

British Dictionary definitions for bur (5 of 8)

burr

1
/ (bɜː) /

noun


noun, verb

a variant spelling of bur

verb (tr)

to form a rough edge on (a workpiece)
to remove burrs from (a workpiece) by grinding, filing, etc; deburr

Word Origin for burr

C14: variant of bur

British Dictionary definitions for bur (6 of 8)

burr

2
/ (bɜː) /

noun

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
a whirring sound

verb

to pronounce (words) with a burr
to make a whirring sound

Word Origin for burr

C18: either special use of bur (in the sense: rough sound) or of imitative origin

British Dictionary definitions for bur (7 of 8)

burr

3

bur

/ (bɜː) /

noun

a washer fitting around the end of a rivet
a blank punched out of sheet metal

Word Origin for burr

C16 (in the sense: broad ring on a spear): variant of burrow (in obsolete sense: borough)

British Dictionary definitions for bur (8 of 8)

burr

4

buhr or bur

/ (bɜː) /

noun

short for buhrstone
a mass of hard siliceous rock surrounded by softer rock

Word Origin for burr

C18: probably from bur, from its qualities of roughness
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

Medicine definitions for bur (1 of 2)

bur

n.

A rotary cutting instrument used in dentistry for excavating decay, shaping cavity forms, and reducing tooth structure.
A drilling tool for enlarging a trephine hole in the cranium.

Medicine definitions for bur (2 of 2)

burr

[ bûr ]

n.

Variant ofbur

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

Science definitions for bur

bur

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.