/ Dictionary / Index O Old Ironsides: Meaning and Definition of Find definitions for: Old' I'ronsides Pronunciation: [key] the U.S. frigate Constitution (used as a nickname). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Old Irish oldish Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language