\Pier"cer\, n.
1. One who, or that which, pierces or perforates;
   specifically:
   (a) An instrument used in forming eyelets; a stiletto.
   (b) A piercel.
2. (Zo["o]l.)
   (a) The ovipositor, or sting, of an insect.
   (b) An insect provided with an ovipositor.