/ Dictionary / Index B black mark: Meaning and Definition of Find definitions for: black' mark' Pronunciation: [key] an indication of failure or censure: His chronic lateness is a black mark against him. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Black Maria black market Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language