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buhr

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buhr

[bur]
–noun
1. burr 1 (def. 1).
2. burr 4 .
3. burstone.

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

4[bur]
–noun
burstone.
Also, buhr.


Origin:
1250–1300; ME burre, prob. so called from its roughness

bur⋅stone

[bur-stohn]
–noun
1. any of various siliceous rocks used for millstones.
2. a millstone of such material.
Also called buhr, burr.


Origin:
bur(r) 4 + stone
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

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: burr
variant of BUR
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

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.
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