knife-edge | (n) คมมีด, See also: ใบมีด |
knife-edge | |
knife-edges |
knife-edge | (n) a narrow boundary |
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 ]
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