/ Dictionary / Index J justiciar: Meaning and Definition of Find definitions for: jus•ti•ci•ar Pronunciation: ( ju-stish'ē-ur), [key] — n. a high judicial officer in medieval England. the chief political and judicial officer in England from the reign of William I to that of Henry III. justiciary (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: justiciar (Thesaurus) justiciable justiciary Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language