Earthworm n. : Any worm of the genus Lumbricus and allied genera, found in damp soil. One of the largest and most abundant species in Europe and America is L. terrestris; many others are known; -- called also angleworm and dewworm.

Earthworm n. : A mean, sordid person; a niggard.

Example:
What kind of huge Earthworm crawls on top of the ground during the heat of the day?

Taxonomy
earthworms, worm, soil, species, Biology and Ecology of Earthworms, regeneration, Lumbricus terrestris, segments, pores, earthworm populations, Australia, body, population, cocoon, blood, leaf, organic matter, burrow.

Defination from the web:
Earthworm is the common name for the largest members of Oligochaeta (which is either a class or subclass depending on the author) in the phylum Annelida. ... Folk names for the earthworm include "dew-worm", "rainworm", "night crawler" and "angleworm" (due to its use as fishing bait) ...