/ Dictionary / Index O Oak Forest: Meaning and Definition of Find definitions for: Oak' For'est Pronunciation: [key] a town in NE Illinois. 26,096. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oak fern oak gall Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language