Definition of Crawler

Noun: crawler kro-lu(r)

A person who tries to please someone in order to gain a personal advantage
- sycophant, toady, lackey, lacquey
A person who crawls or creeps along the ground
- creeper
Terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers
- earthworm, angleworm, fishworm, fishing worm, wiggler, nightwalker [N. Amer], nightcrawler [N. Amer], dew worm, red worm, earth worm
A computer program that prowls the internet looking for publicly accessible resources that can be added to a database; the database can then be searched with a search engine
- spider, web crawler