DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   wane
       n 1: a gradual decline (in size or strength or power or number)
            [syn: ebb, ebbing, wane]
       v 1: grow smaller; "Interest in the project waned" [syn:
            decline, go down, wane]
       2: become smaller; "Interest in his novels waned" [ant: climb,
          mount, rise, wax]
       3: decrease in phase; "the moon is waning" [ant: full, wax]