DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   pearl
       n 1: a smooth lustrous round structure inside the shell of a
            clam or oyster; much valued as a jewel
       2: a shade of white the color of bleached bones [syn: bone,
          ivory, pearl, off-white]
       3: a shape that is spherical and small; "he studied the shapes
          of low-viscosity drops"; "beads of sweat on his forehead"
          [syn: drop, bead, pearl]
       v 1: gather pearls, from oysters in the ocean