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.

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Also bur (for defs. 1, 3) .

Origin of burr

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

Definition for burr (2 of 5)

burr2

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
First recorded in 1375–1425; late Middle English burrewez (plural), buruhe “circle,” variant of brough “round tower”; see broch

Definition for burr (3 of 5)

burr3
[ bur ]
/ bɜr /

noun

verb (used without object)

verb (used with object)

to pronounce (words, sounds, etc.) with a burr.

Origin of burr

3
First recorded in 1750–60; apparently both imitative and associative, the sound being thought of as rough like a bur

Definition for burr (4 of 5)

burr4

or buhr

[ bur ]
/ bɜr /

noun

Origin of burr

4
First recorded in 1250–1300; Middle English burre, probably so called from its roughness

Definition for burr (5 of 5)

Burr
[ bur ]
/ bɜr /

noun

Aaron, 1756–1836, vice president of the U.S. 1801–05.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for burr

British Dictionary definitions for burr (1 of 5)

burr1
/ (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 burr (2 of 5)

burr2
/ (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 burr (3 of 5)

burr3

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 burr (4 of 5)

burr4

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

British Dictionary definitions for burr (5 of 5)

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
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

Medical definitions for burr

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.