a large North Pacific salmon that is commercially important as a food fish

a close friend

she shared the cake with her chums

an old school chum

used as a friendly or familiar form of address between men or boys

it's your own fault, chum

form a friendship with someone

his sister chummed up with Sally

chopped fish and other material thrown overboard as angling bait

the anglers anchored down and put out their blood chum

fish using chum as bait

chumming is always a must when flounder fishing