/ Dictionary / Index M motorboat: Meaning and Definition of Find definitions for: mo•tor•boat Pronunciation: (mō'tur-bōt"), [key] — n. a boat propelled by an inboard or outboard motor. —v.i. to travel in or operate a motorboat: to motorboat from Hyannis to Martha's Vineyard. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: motorboat (Thesaurus) motorbike motorboating Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language