A tool for smoothing boards or other surfaces of wood, for
   forming moldings, etc. It consists of a smooth-soled stock, usually of
   wood, from the under side or face of which projects slightly the steel
   cutting edge of a chisel, called the iron, which inclines backward,
   with an apperture in front for the escape of shavings; as, the jack
   plane; the smoothing plane; the molding plane, etc.