duello (n.)
established duelling code
LLL I.ii.172[Armado alone, of a Spaniard] the duello he regards not
TN III.iv.298[Sir Toby to Sir Andrew, of Viola as Cesario] The gentleman will ... have one bout with you, he cannot by the duello avoid it
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL