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knife
n, pl knives 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 electrical current 2 : SURGERY 3 - usu. used in the phrase under the knife <went under the this morning> <was afraid of the > .
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Similar sounding terms: na·ive NF
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