'nightwalker' definitions:
Definition of 'nightwalker'
(from WordNet)
noun
Terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers [syn: earthworm, angleworm, fishworm, fishing worm, wiggler, nightwalker, nightcrawler, crawler, dew worm, red worm]