earthworm(redirected from Earth worm)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Any of various terrestrial annelid worms of the class Oligochaeta, especially those of the family Lumbricidae, that burrow into and help aerate and enrich soil.
earthwormany ANNELID of the order Oligochaeta.
the common oligochete worm of the genera Lumbricus, Allobophora, Eisenia etc.; they act as intermediate hosts for a number of internal parasites of livestock, and are reputed to bring anthrax spores to the surface and precipitate an outbreak of the disease.