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n. pl. knives (nīvz)
1. A cutting instrument consisting of a sharp blade attached to a handle.
2. A cutting edge; a blade.
v. knifed, knif·ing, knifes
1. To use a knife on, especially to stab; wound with a knife.
2. Informal To betray or attempt to defeat by underhand means.
To cut or slash a way through something with or as if with a knife: The boat knifed through the waves.
under the knife Informal
[Middle English knif, from Old English cnīf, from Old Norse knīfr.]
an incident during which someone is attacked and injured with a knife