/ Dictionary / Index R regal moth: Meaning and Definition of Find definitions for: re'gal moth' Pronunciation: [key] a large moth, Citheronia regalis, having yellow spots on gray to olive forewings and on orange-red hind wings. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. regality Regan Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language