/ Dictionary / Index B block coal: Meaning and Definition of Find definitions for: block' coal" Pronunciation: [key] bituminous coal that breaks into large lumps or cubical blocks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. block chord block coefficient 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