DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   atrophy
       n 1: a decrease in size of an organ caused by disease or disuse
            [syn: atrophy, wasting, wasting away]
       2: any weakening or degeneration (especially through lack of
          use) [syn: atrophy, withering]
       v 1: undergo atrophy; "Muscles that are not used will atrophy"