/ Dictionary / Index I inboard: Meaning and Definition of Find definitions for: in•board Pronunciation: (in'bôrd", -bōrd"), [key] — adj. located nearer the longitudinal axis or center, as of an airplane: the inboard section of a wing. located inside a hull or aircraft: a motorboat with an inboard engine. (of a motorboat) having the motor inboard. —adv. inside or toward the longitudinal axis or center of a hull, aircraft, machine, etc. Cf. outboard (def. 4). —n. an inboard motor. a boat equipped with an inboard motor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: inboard (Thesaurus) in-between inboard-outboard 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