/ Dictionary / Index C caterpillar: Meaning and Definition of Find definitions for: cat•er•pil•lar Pronunciation: (kat'u-pil"ur, kat'ur-), [key] — n. the wormlike larva of a butterfly or a moth. a person who preys on others; extortioner. cat•er•pil•lar Pronunciation: (kat'u-pil"ur, kat'ur-), [key] — adj. (of a tractor, earth-moving equipment, etc.) propelled by caterpillar treads. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: caterpillar (Thesaurus) Caterina caterpillar tread Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language