crawler

About 0.21 uses per million words.

Meaning

noun A child who is able to creep using its hands and knees but is not able to walk.
noun A crawl swimmer.
noun A tractor crawler, a motorized vehicle that uses caterpillar tracks instead of wheels.
noun A software bot that autonomously follows connected paths such as links between web pages.
noun A mobile stage in the development of stationary hemipteran insects such as scale insects—generally the first instar.
noun This term needs a definition. Please help out and add a definition, then remove the text {{rfdef}}.
noun A cab that is driven slowly along while its driver looks out for a fare.
noun Synonym of crawler crane.