1. 1 Angling chiefly US and Canadian chopped fish, meal, etc., used as groundbait 2 a Pacific salmon, Oncorhynchus keta Collins Discovery Encyclopedia, 1st Explanation of Chummy

2. Fish Chum, also called Stink Bait, Bunker, Burley, Groundbait, or Ground Bait, is fish entrails and other delightful morsels that you put in the water that has a fishy enticing aroma which will attract fish to YOU!Bunker is a fish appetizer, teaser, and fish attractant