/ Dictionary / Index A apostle plant: Meaning and Definition of Find definitions for: apos'tle plant" Pronunciation: [key] a plant, Neomarica northiana, of the iris family, native to Brazil, having large, fragrant white and violet flowers, and often cultivated as a houseplant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Apostle pitcher Apostles' Creed Related Content Daily Word Quiz: diurnal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language