/ Dictionary / Index B brown sugar: Meaning and Definition of Find definitions for: brown' sug'ar Pronunciation: [key] unrefined or partially refined sugar that retains some molasses. a commercial product consisting of white, refined sugar to which molasses has been added. brownish-colored heroin manufactured illicitly in Mexico. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. brown study Brownsville Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language