DUEL

I. noun Etymology: Middle English, from Medieval Latin ~lum, from Old Latin, war Date: 15th century a combat between two persons, a conflict between antagonistic persons, ideas, or forces, II. verb (~ed or ~led; ~ing or ~ling) Date: circa 1645 intransitive verb to fight a ~, transitive verb to encounter (an opponent) in a ~, ~er or ~ler noun ~ist or ~list noun