Breadcrumb Home > Dictionary > Index W webworm: Meaning and Definition of Find definitions for: web•worm Pronunciation: (web'wûrm"), [key] — n. the larva of any of several moths, as Hyphantria cuneaor Loxostege similaliswhich spins a web over the foliage on which it feeds. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: webworm (Thesaurus) web-toed Wechsler Scales ✖ Related Content Daily Word Quiz: hieratic Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language