/ Dictionary / Index A arum lily: Meaning and Definition of Find definitions for: ar'um lil"y Pronunciation: [key] calla (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arum family Arundel Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language