/ Dictionary / Index O Old Bulgarian: Meaning and Definition of Find definitions for: Old' Bulgar'ian Pronunciation: [key] the Bulgarian language of the Middle Ages. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Old British Old Cairo Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language