/ Dictionary / Index D doubloon: Meaning and Definition of Find definitions for: dou•bloon Pronunciation: (du-bln'), [key] — n. a former gold coin of Spain and Spanish America, originally equal to two escudos but fluctuating in value. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: doubloon (Thesaurus) doubling doublure Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language