DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   isinglass
       n 1: any of various minerals consisting of hydrous silicates of
            aluminum or potassium etc. that crystallize in forms that
            allow perfect cleavage into very thin leaves; used as
            dielectrics because of their resistance to electricity
            [syn: mica, isinglass]