/ Dictionary / Index R rubrum lily: Meaning and Definition of Find definitions for: ru'brum lil"y Pronunciation: (r'brum), [key] either of two cultivated lilies, Lilium auratum rubrum or L. speciosum rubrum, having showy red flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rubrician rubstone Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language