/ Dictionary / Index O Old Stone Age: Meaning and Definition of Find definitions for: Old' Stone' Age" Pronunciation: [key] the Paleolithic period. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Old Stoa old style Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language