n. a close friend who accompanies his buddies in their activities
n. bait consisting of chopped fish and fish oils that are dumped overboard to attract fish
n. a large Pacific salmon with small spots on its back; an important food fish
n. 与某人成为好朋友, 结交( chum的复数形式 )
v. （与某人）成为好友( chum的第三人称单数 )