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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.

See Examples For:

For years, Surf City conservatives like Gates have reveled in playing the burr in the saddle of deep blue California.

From Los Angeles Times Apr. 9, 2026

Famous for his encyclopedic knowledge of the benchmark stock index and his fast-paced Brooklyn burr, he has been a markets data maven for everyone from Wall Street analysts to financial journalists.

From The Wall Street Journal Feb. 3, 2026

The following year, his balloon burst a mile above the ground in Virginia, and his re-attempt at the flight saw him wrecked among burr chestnut trees and almost killed.

From Salon Nov. 3, 2024

Still, there’s a difference between a burr in one’s saddle and feeling like you’re sitting right on top of three or four other teams each pointing a pitchfork at your backside.

From Seattle Times Feb. 22, 2024

It’s Sticky, who sticks to everything like a burr and is best friends with Goober, an ogre with terrible acne and a snotty nose—a bad combination even for an ogre.

From "The Tenth Mistake of Hank Hooperman" by Gennifer Choldenko

Christopher’s Russian bearing is so convincing that I didn’t immediately put together that this was the same actor who played Aaron Burr at the Hollywood Pantages and Pirelli opposite Groban on Broadway.

From Los Angeles Times Apr. 22, 2026

Mr. Burr is the author of the movie-recommendation newsletter Ty Burr’s Watch List.

From The Wall Street Journal Feb. 13, 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

Americans have been worrying about the risks of mixing banking and commerce since Aaron Burr shot Alexander Hamilton.

From Barron's Dec. 19, 2025

Both Burr and Hamilton thought of themselves as great men who happened to come of age at one of those strategic points in the campaign of history called the American revolutionary era.

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

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