'Knife-edge' definitions:

Definition of 'knife-edge'

(from WordNet)
noun
A narrow boundary; "he lived on a knife-edge between genius and insanity"

Definition of 'Knife-edge'

From: GCIDE
  • Knife-edge \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. [1913 Webster]
  • Knife-edge file. See Illust. of File. [1913 Webster]

Words containing 'Knife-edge'