/ Dictionary / Index O Old Believer: Meaning and Definition of Find definitions for: Old' Believ'er Pronunciation: [key] Raskolnik. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Old Bailey old boy Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language