say it: KAT-uh-pil-ur
caterpillar is a noun meaning "a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth". It carries 2 recorded senses.
a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth
a large tracked vehicle that is propelled by two endless metal belts; frequently used for moving earth in construction and farm work
slang · trademark
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for caterpillar come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.