/ Dictionary / Index O old-boyism: Meaning and Definition of Find definitions for: old-boy•ism Pronunciation: (ōld'boi'iz-um), [key] — n. support of or participation in an old-boy network. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. old boy old-boy network Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language