/ Dictionary / Index O Oak Lawn: Meaning and Definition of Find definitions for: Oak' Lawn' Pronunciation: [key] a city in NE Illinois, near Chicago. 60,590. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Oakland Park oak leaf cluster Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language