/ Thesaurus / T Synonyms of tobacco hornworm Find synonyms for: Noun1. tobacco hornworm, tomato worm, Manduca sexta, caterpillarusage: large green white-striped hawkmoth larva that feeds on tobacco and related plants; similar to tomato hornwormWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language