The definition of a knife is a tool with a sharp blade and a handle used for cutting or stabbing.(noun)
To knife is defined as to cut or stab someone using a tool with a handle and a sharp metal blade.(verb)
When a murderer stabs someone using a sharp blade, this is an example of a when the murdered knifes his victim.
See knife in Webster's New World College Dictionary
noun pl. knives
Origin: ME knif < OE cnif, akin to Ger kneif, ON knīfr < IE *gneibh- (> Lith gnaibis, a pinching): for base see knead
See knife in American Heritage Dictionary 4
noun pl. knives knives (nīvz)
Origin: Middle English knif
Origin: , from Old English cnīf
Origin: , from Old Norse knīfr.
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