DUEL, n. A formal ceremony preliminary to reconciliation of two enemies. Great skill is necessary to its satisfactory observance; if awkwardly performed . . . deplorable consequences sometimes ensue. A long time ago a man lost his life.
Source: The Devil's Dictionary, 1911.
-- Ambrose Bierce, (Jun 24 1842-1914), US journalist, short-story writer; He was a noted wit, satirist and sardonic short story writer who disappeared while covering the Mexican revolution.