Noun | 1. | ![]() annelid, annelid worm, segmented worm - worms with cylindrical bodies segmented both internally and externally class Oligochaeta, Oligochaeta - earthworms dew worm, earthworm, fishing worm, fishworm, nightcrawler, nightwalker, red worm, angleworm, crawler, wiggler - terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers |