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. /as>.
(Science: botany) (Shak) knife grass 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.
1. (Science: botany) to prune with the knife.
Origin: Knifed; Knifing.