DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   chum
       n 1: a close friend who accompanies his buddies in their
            activities [syn: buddy, brother, chum, crony,
            pal, sidekick]
       2: bait consisting of chopped fish and fish oils that are dumped
          overboard to attract fish
       3: a large Pacific salmon with small spots on its back; an
          important food fish [syn: chum salmon, chum,
          Oncorhynchus keta]