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bur

 - 19 dictionary results
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bur

1  [bur] noun, verb, burred, bur⋅ring.
Use bur in a Sentence
–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. burr 1 (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)
7. to extract or remove burs from.
Origin:
1300–50; ME burre, appar. c. Dan burre, Norw, Sw borre bur
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bur

2  [bur]
–noun
burr 2 .

Bur.

 
Burma.

bur.

 
bureau.

burr

1  [bur]
–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. deburr.
Also, bur (for defs. 1, 3).

Origin:
1605–15; sp. var. of bur 1

burr

2  [bur]
–noun
1. a washer placed at the head of a rivet.
2. a blank punched out of a piece of sheet metal.
Also, bur.

Origin:
1375–1425; late ME burrewez (pl.), buruhe circle, var. of brough round tower; see broch
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To bur
bur 1 also burr   (bûr)   
n.  

    1. A rough prickly husk or covering surrounding the seeds or fruits of plants such as the chestnut or the burdock.

    2. A plant producing such husks or coverings.

  2. A persistently clinging or nettlesome person or thing.

  3. A rough protuberance, especially a burl on a tree.

  4. Any of various rotary cutting tools designed to be attached to a drill.


[Middle English burre, of Scandinavian origin.]
bur 2   (bûr)   
n.   & v.
Variant of burr2.
bur 3   (bûr)   
n.  Variant of burr3.
burr 2 also bur   (bûr)   
n.  

  1. A trilling of the letter r, usually made with the tip of the tongue and characteristic of Scottish speech.

  2. A buzzing or whirring sound.

v.   burred, burr·ing, burrs also burs

v.   tr.
To pronounce with a burr.
v.   intr.

  1. To speak with a burr.

  2. To make a buzzing or whirring sound.


[Imitative.]
burr 3 also bur   (bûr)   
n.  A washer that fits around the smaller end of a rivet.

[Middle English burre, ring, disk, alteration of burwhe, circle, disk.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Word Origin & History

bur 
"prickly seed vessel of some plants," c.1330, burre, from Scand. (cf. Dan. borre, Sw. hard-borre, O.N. burst "bristle"), from PIE *bhors- (see bristle). Transferred 1611 to "rough edge on metal," which may have been the source of the sense "rough sound of the letter -r-" (see burr).

burr 
"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 (1393), which was a figure of speech for "feel a choking sensation, huskiness." The Scottish -r- is a lingual trill, not a true burr.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: bur
Pronunciation: 'b&r
Function: noun
1 usually burr : a small surgical cutting tool (as for making an opening inbone)
2 : a bit used on a dental drill

Main Entry: burr
variant of BUR
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
Cite This Source
Medical Dictionary

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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Science Dictionary
bur also burr   (bûr)  Pronunciation Key 
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.
Cite This Source
Abbreviations & Acronyms
BUR

  1. Burbank Glendale Pasadena Airport

  2. Myanmar (international vehicle ID)

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
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