The Collaborative International Dictionary of English v.0.48:

Piercel \Pier"cel\, n. [Cf. F. perce.]
   A kind of gimlet for making vents in casks; -- called also
   piercer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Piercer \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.
          [1913 Webster]

   2. (Zool.)
      (a) The ovipositor, or sting, of an insect.
      (b) An insect provided with an ovipositor.
          [1913 Webster]