Webster’s Revised Unabridged Dictionary · 1913
Knife
Knife, n.; pl. Knives (#). [OE. knif, AS. cnīf; akin to D. knijf, Icel. knīfr, Sw. knif, Dan. kniv.] 1. An instrument consisting of a thin blade, usually of steel and having a sharp edge for cutting, fastened to a handle, but of many different forms and names for different uses; as, table knife, drawing knife, putty knife, pallet knife, pocketknife, penknife, chopping knife, etc..
2. A sword or dagger.
The coward conquest of a wretch's knife. Shak.
Knife grass (Bot.) a tropical American sedge (Scleria latifolia), having leaves with a very sharp and hard edge, like a knife. — War to the knife, mortal combat; a conflict carried to the last extremity.
Knife, v. t. [imp. & p. p. Knifed; p. pr. & vb. n. Knifing.] 1. (Hort.) To prune with the knife.
2. To cut or stab with a knife. [Low]