/ Dictionary / Index J jester: Meaning and Definition of Find definitions for: jest•er Pronunciation: ( jes'tur), [key] — n. a person who is given to witticisms, jokes, and pranks. a professional fool or clown, esp. at a medieval court. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jester (Thesaurus) jestbook Jesu Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language