/ Dictionary / Index J Jet Ski: Meaning and Definition of Find definitions for: Jet' Ski" Pronunciation: [key] a jet-propelled boat ridden like a motorcycle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jet set jet stream Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language