The art or practice of dueling, or the code of laws which regulate it.(noun)
The Century Dictionary (Public Domain)
Use "duello" in a sentence
"When Sharrkan heard this he said, O monk, I agree to that, for it is just nor may it be gainsaid; and behold, I will meet him in duello and do with him derring do, for I am Champion of the Faithful even as he is Champion of the"
"“Why, listen, then,” said the officer as they proceeded on their walk, “listen to the reason of the thing, and consider whether such a custom can obtain, as that which they term the duello, in any country of civilization and common sense, to say nothing of one which is blessed with the domination of the most rare Alexius Comnenus."
"Whatever might have been the feelings and intentions of the men around him, the precedence of McKinstry's right to the duello was a principle too deeply rooted in their traditions to deny; if any resistance to it had been contemplated by some of them, the fact that the master was now armed, and that Mr. McKinstry would quickly do battle at his side with a revolver in defence of his rights, checked any expression."