/ Dictionary / Index B black diamond: Meaning and Definition of Find definitions for: black' dia'mond Pronunciation: [key] carbonado. coal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Black Death black disease 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