Definitions

1. noun

a small, usually red, worm that lives in water and is a larval stage of certain non-biting midges and other insects, especially those that infest the blood of fish

“The angler carefully removed the bloodworm from the trout’s gills.”

2. noun

a type of hook bait used in fishing, typically made from a worm or a substitute

“The fisherman used a bloodworm as his lure to catch the large trout.”