/ Dictionary / Index B burnt sienna: Meaning and Definition of Find definitions for: burnt' sien'na Pronunciation: [key] See under(def. 1). an intense dark reddish-brown color. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. burnt-out burnt umber Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language