annelid, annelid worm, segmented worm - worms with cylindrical bodies segmented both internally and externally

class Polychaeta, Polychaeta - marine annelid worms

lobworm, lugworm, lug - marine worms having a row of tufted gills along each side of the back; often used for fishing bait

sea mouse - any of several large worms having a broad flattened body with a mat of coarse hairs covering the back

bloodworm - a segmented marine worm with bright red body; often used for bait