Definitions for: Knife Edge


[n] the sharp cutting side of the blade of a knife
[n] a narrow boundary; "he lived on a knife-edge between genius and insanity"



Webster (1913) Definition: Knife"-edge`, n. (Mech.)
A piece of steel sharpened to an acute edge or angle, and
resting on a smooth surface, serving as the axis of motion of
a pendulum, scale beam, or other piece required to oscillate
with the least possible friction.

Knife-edge file. See Illust. of File.

Synonyms: cutting edge

See Also: blade, boundary, bounds, edge, edge tool, limit

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