earthworm

noun

1. terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers

   noun.animal

   Synonyms angleworm crawler dew worm fishing worm fishworm nightcrawler nightwalker red worm wiggler

   Source: WordNet 3.0

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

   noun

   Source: webster1913