/ Dictionary / Index A aril: Meaning and Definition of Find definitions for: ar•il Pronunciation: (ar'il), [key] — n. Bot. a usually fleshy appendage or covering of certain seeds, as of the bittersweet, Celastrus scandens, or the nutmeg. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aril (Thesaurus) ariki arillate Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language