- knife - edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle
--1 is a kind of edge tool
--1 has parts: blade; haft, helve; knife blade; point
--1 has particulars:Derived form: verb knife1 - knife - a weapon with a handle and blade with a sharp point
--2 is a kind of weapon, arm, weapon system
--2 has parts: point, tip, peak
--2 has particulars:bayonet; dagger, sticker; flick-knife; khukuri; machete, matchet, panga; shiv; trench knife; yataghan Derived form: verb knife1 - tongue, knife - any long thin projection that is transient; "tongues of flame licked at the walls"; "rifles exploded quick knives of fire into the dark"
--3 is a kind of projection