DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   category
       n 1: a collection of things sharing a common attribute; "there
            are two classes of detergents" [syn: class, category,
            family]
       2: a general concept that marks divisions or coordinations in a
          conceptual scheme