/ Dictionary / Index G gas mantle: Meaning and Definition of Find definitions for: gas' man"tle Pronunciation: [key] mantle (def. 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gasman gas mask Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language