/ Dictionary / Index B Barons' War: Meaning and Definition of Find definitions for: Bar'ons' War' Pronunciation: [key] a rebellion of English nobles (1263–67) against King Henry III, undertaken in an effort to curtail royal prerogatives and extend the powers of the nobles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. baron of beef barony 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