razor

[rey-zer]
noun
1.
a sharp-edged instrument used especially for shaving the face or trimming the hair.
2.
an electrically powered instrument used for the same purpose.
verb (used with object)
3.
to shave, cut, or remove with or as if with a razor.
Idioms
4.
on the razor's edge, in a difficult or precarious position.

Origin:
1250–1300; Middle English rasour < Old French rasor, equivalent to ras(er) to raze + -or -or2

razorless, adjective
unrazored, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
razor (ˈreɪzə)
 
n
1.  a sharp implement used esp by men for shaving the face
2.  on a razor's edge, on a razor-edge in an acute dilemma
 
vb
3.  (tr) to cut or shave with a razor
 
[C13: from Old French raseor, from raser to shave; see raze]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

razor
late 13c., from O.Fr. rasour "a razor" (12c.), from raser "to scrape, shave" (see raze). The use of razorback for a type of pig with a sharp ridge-like back dates from 1849.
Online Etymology Dictionary, © 2010 Douglas Harper
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Easton
Bible Dictionary

Razor definition


The Nazarites were forbidden to make use of the razor (Num. 6:5; Judg. 13:5). At their consecration the Levites were shaved all over with a razor (Num. 8:7; comp. Ps. 52:2; Ezek. 5:1).

Easton's 1897 Bible Dictionary
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American Heritage
Idioms & Phrases

razor

see sharp as a tack (razor).

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Encyclopedia Britannica
Encyclopedia

razor

keen-edged cutting implement for shaving or cutting hair. Prehistoric cave drawings show that clam shells, shark's teeth, and sharpened flints were used as shaving implements, and flints are still in use by certain primitive tribes. Solid gold and copper razors have been found in Egyptian tombs of the 4th millennium BC. According to the Roman historian Livy, the razor was introduced in Rome in the 6th century BC by Lucius Tarquinius Priscus, legendary king of Rome; but shaving did not become customary until the 5th century BC.

Learn more about razor with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The razor blade was being used as a knife edge in optical measurements.
These two photos below show a safety razor and the removable blade that they
  use.
On a lark, he took razor to tape to edit out the barks and then painstakingly
  spliced them together.
But it beats the ingrown hairs and razor bumps that come from shaving, she says.
Idioms & Phrases
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