/ Dictionary / Index P powder flask: Meaning and Definition of Find definitions for: pow'der flask" Pronunciation: [key] a small flask of gunpowder formerly carried by soldiers and hunters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. powder flag powder horn 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