/ Dictionary / Index J jet boat: Meaning and Definition of Find definitions for: jet' boat" Pronunciation: [key] a small, propellerless boat powered by an engine that ejects water for its thrust. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jet-black jetborne Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language