Source : Webster's Revised Unabridged Dictionary (1913)

Punch \Punch\, n. [Abbrev. fr. puncheon.]
   1. A tool, usually of steel, variously shaped at one end for
      different uses, and either solid, for stamping or for
      perforating holes in metallic plates and other substances,
      or hollow and sharpedged, for cutting out blanks, as for
      buttons, steel pens, jewelry, and the like; a die.

   2. (Pile Driving) An extension piece applied to the top of a
      pile; a dolly.

   3. A prop, as for the roof of a mine.

   {Bell punch}. See under {Bell}.

   {Belt punch} (Mach.), a punch, or punch pliers, for making
      holes for lacings in the ends of driving belts.

   {Punch press}. See {Punching machine}, under {Punch}, v. i.
      

   {Punch pliers}, pliers having a tubular, sharp-edged steel
      punch attached to one of the jaws, for perforating
      leather, paper, and the like.

Source : WordNet®

punch press
     n : a power driven press used to shape metal parts