/ Dictionary / Index I ilex: Meaning and Definition of Find definitions for: i•lex Pronunciation: (ī'leks), [key] — n. See i•lex Pronunciation: (ī'leks), [key] — n. any tree or shrub of the genus Ilex. a holly. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ilex (Thesaurus) ileus Ilford Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language