knife

3 ENTRIES FOUND:

knife

noun \ˈnīf\
plural knives \ˈnīvz\

Definition of KNIFE

1
: any of various instruments used in surgery primarily to sever tissues: as a : a cutting instrument consisting of a sharp blade attached to a handle b : an instrument that cuts by means of an electric current
2
: surgery 3—usually used in the phrase under the knife <went under the knife yesterday> <was afraid of the knife>

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