| knife | (n) edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle |
| knife | (n) a weapon with a handle and blade with a sharp point |
| knife | (v) use a knife on, Syn. stab, Example: The victim was knifed to death |
| knife blade | (n) the blade of a knife |
| knife edge | (n) the sharp cutting side of the blade of a knife, Syn. cutting edge |
| knife-edge | (n) a narrow boundary, Example: he lived on a knife-edge between genius and insanity |
| knife fight | (n) fighting with knives, Syn. cut-and-thrust, snickersnee |
| knifelike | (adj) cutting or able to cut as if with a knife |
| knifelike | (adj) having a sharp or distinct edge, Example: a narrow knifelike profile |
| knife pleat | (n) a single pleat turned in one direction |
| Knife | n.; The coward conquest of a wretch's knife. Shak. [ 1913 Webster ]
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| Knife | v. t. |
| Knifeboard | n. A board on which knives are cleaned or polished. [ 1913 Webster ] |
| 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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| Knife switch | . (Elec.) A switch consisting of one or more knifelike pieces hinged at one end and making contact near the other with flat gripping springs. [ Webster 1913 Suppl. ] |