knife-edge

knife edge

noun
1.
the cutting edge of a knife.
2.
anything very sharp.
3.
a wedge on the fine edge of which a scale beam, pendulum, or the like, balances or oscillates.

Origin:
1810–20

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To knife-edge
Collins
World English Dictionary
knife edge
 
n
1.  the sharp cutting edge of a knife
2.  any sharp edge
3.  a sharp-edged wedge of hard material on which the beam of a balance pivots or about which a pendulum is suspended
4.  a critical point in the development of a situation, process of making a decision, etc

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature