n. 1. (Carp.) (a) A plane made like a spokeshave, for working the inside edges of circular sashes. (b) A plane with a hooked tool protruding far below the sole, for smoothing the bottom of a cavity. [ 1913 Webster ]
2. (Mach.) A machine with a rapidly revolving vertical spindle and cutter for scooping out the surface of wood or metal, as between and around the engraved parts of an electrotype. [ Webster 1913 Suppl. ]