/ Dictionary / Index M moth: Meaning and Definition of Find definitions for: moth Pronunciation: (môth, moth), [key] — pl. moths any of numerous insects of the order Lepidoptera, generally distinguished from the butterflies by having feathery antennae and by having crepuscular or nocturnal habits. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: moth (Thesaurus) motet mothball Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language