Source : Webster's Revised Unabridged Dictionary (1913)

Peppercorn \Pep"per*corn`\, n.
   1. A dried berry of the black pepper ({Piper nigrum}).

   2. Anything insignificant; a particle.

Source : WordNet®

peppercorn
     n : pungent seasoning from the berry of the common pepper plant
         of East India; use whole or ground [syn: {pepper}]