/ Dictionary / Index I inboard-outboard: Meaning and Definition of Find definitions for: in•board-out•board Pronunciation: (in'bôrd"out'bôrd", in'bōrd"out'bōrd"), [key] — adj. (of a motorboat) having an inboard engine connected to a maneuverable outboard drive-shaft unit. —n. an inboard-outboard motor. a boat equipped with such a motor. Abbr.: I/O&hasp;&hasp; Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. inboard inbond 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