/ Dictionary / Index G gas tank: Meaning and Definition of Find definitions for: gas' tank" Pronunciation: [key] a tank containing the gasoline supply in a car, truck, or other gasoline-engine vehicle. a storage tank for gas or gasoline. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gast Gastarbeiter* 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