annelid (n.)

"segmented worm," 1834, from French annélide, source of the phylum name Annelida, coined 1801 in Modern Latin by French naturalist J.B.P. Lamarck, from annelés "ringed ones" (from Latin anulus "little ring," a diminutive of anus "ring;" see anus) + Greek eidos "form, shape" (see -oid).