/ Dictionary / Index P powder flag: Meaning and Definition of Find definitions for: pow'der flag" Pronunciation: [key] — Naut. Naut. See(def. 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. powdered sugar powder flask 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