Learn how to say Dueller correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word duel:
a prearranged contest with deadly weapons between two people in order to settle a point of honour:
twice he had seriously wounded men in duels
(in modern use) a contest between two parties:
he won by a short head after a great final-furlong duel
verb (duels, duelling, duelled; US duels, dueling, dueled)
fight a duel or duels:
shall we duel over this?
(as noun duelling)
duelling had been forbidden for serving officers