/ Dictionary / Index P powder magazine: Meaning and Definition of Find definitions for: pow'der magazine" Pronunciation: [key] a compartment for the storage of ammunition and explosives. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. powder keg powderman Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language