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knife edge

See more synonyms for knife edge on Thesaurus.com
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.
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Origin of knife edge

First recorded in 1810–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

pleat, layer, convolution, corrugation, bend, cockle, gathering, ridge, overlap, ruck, crimp, ruffle, plication, ply, wrinkle, lap, furrow, circumvolution, gather, pucker

Examples from the Web for knife edge

Historical Examples

  • A touch of a knife-edge to the rope, and the girl would be saved.

    Out of the Depths

    Robert Ames Bennet

  • Followed by another, he advanced along the knife-edge to their wounded comrade.

  • Her offered, her passive extent, in other words, was about that of a knife-edge.

  • The points of the pins serve as a knife-edge for the rocker.

  • The knife-edge is then turned forward and made to cut its way out.


British Dictionary definitions for knife edge

knife edge

noun
  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
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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