/ Dictionary / Index J jet set: Meaning and Definition of Find definitions for: jet' set" Pronunciation: [key] a fashionable social set composed of wealthy people who travel frequently by jetliner to parties and resorts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jetsam Jet Ski 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