/ Dictionary / Index M mark of the beast: Meaning and Definition of Find definitions for: mark' of the beast' Pronunciation: [key] the mark put on the forehead of those who worship the beast, the symbol of opposition to God. the stain of apostasy, regarded as both indelible and inescapable. Rev. 13:16. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. markka Markova Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language