Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: History, Armypennonpen‧non /ˈpenən/ noun [countable] SHPMAa long narrow pointed flag, especially one carried on the end of a long pole by soldiers on horses in the Middle AgesOrigin pennon (1300-1400) Old French penon, from penne; → PEN1 ldoceonline.com