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  • burr
    burr
    noun
    Also a protruding, ragged edge raised on the surface of metal during drilling, shearing, punching, or engraving.
  • Burr
    Burr
    noun
    Aaron, 1756–1836, vice president of the U.S. 1801–05.
Synonyms

burr

1 American  
[bur] / bɜr /
Also bur

noun

  1. Also 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, handheld, 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)

  1. to form a rough point or edge on.

  2. deburr.

burr 2 American  
[bur] / bɜr /
Or bur

noun

  1. a washer placed at the head of a rivet.

  2. a blank punched out of a piece of sheet metal.


burr 3 American  
[bur] / bɜr /

noun

  1. a pronunciation of the r- sound as a uvular trill, as in certain Northern English dialects.

  2. a pronunciation of the r- sound as an alveolar flap or trill, as in Scottish English.

  3. any pronunciation popularly considered rough or nonurban.

  4. a whirring noise.


verb (used without object)

  1. to speak with a burr.

  2. to speak roughly, indistinctly, or inarticulately.

  3. to make a whirring sound.

verb (used with object)

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

burr 4 American  
[bur] / bɜr /
Or buhr

noun

  1. burstone.


Burr 5 American  
[bur] / bɜr /

noun

  1. Aaron, 1756–1836, vice president of the U.S. 1801–05.


burr 1 British  
/ 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. a burl on the trunk or root of a tree, sliced across for use as decorative veneer

"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

noun

  1. a variant spelling of bur

"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

verb

  1. to form a rough edge on (a workpiece)

  2. to remove burrs from (a workpiece) by grinding, filing, etc; deburr

"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
burr 2 British  
/ 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

"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

verb

  1. to pronounce (words) with a burr

  2. to make a whirring sound

"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
burr 3 British  
/ bɜː /

noun

  1. a washer fitting around the end of a rivet

  2. a blank punched out of sheet metal

"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

burr 4 British  
/ bɜː /

noun

  1. short for buhrstone

  2. a mass of hard siliceous rock surrounded by softer rock

"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

Burr 5 British  
/ 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

Etymology

Origin of burr1

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

Origin of burr2

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

Origin of burr3

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

Origin of burr4

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“The holdup quite frankly is Marty Makary,” said Richard Burr, the former North Carolina senator who now leads a pro-vaping group, the Coalition for Smarter Regulation of Nicotine.

From The Wall Street Journal • Apr. 17, 2026

“Companies are clearly prioritizing focus, scale and simplicity as they respond to shifting consumption patterns, trade pressures and slower demand,” said Ed Brown, chair of Burr and Forman’s Food and Beverage practice.

From Barron's • Mar. 31, 2026

Koy and Iglesias are now part of a small fraternity of comics, including Kevin Hart, Dane Cook, Bill Burr and Larry the Cable Guy, who’ve sold out stadiums across the country.

From Los Angeles Times • Mar. 5, 2026

Nine years later this new story promises to expand on Le Carré's source material, and alongside Tom Hiddleston's British intelligence operative Jonathan Pine, it sees the return of his fellow spy Olivia Colman's Angela Burr.

From BBC • Dec. 28, 2025

Hamilton was certain that, once Burr recovered his wits and sense, “you will see the matter in the same light as me.”

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

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