annelid /ˈænələd/adjective 1noun 1forms 1 adjective1 •of, or relating to these creatures noun1 •Any of various wormlike animals, of the phylum Annelida, having a segmented body; they include the earthworm and the leech.Incarcerated in earth-filled boxes, the hapless annelids face execution in the morning. Death by immersion in fishponds, death by cruel hooks. — 1990 formsannelids