'Dueler' definitions:

Definition of 'dueler'

From: WordNet
noun
A person who fights duels [syn: dueler, dueller, duelist, duellist]

Definition of 'Dueler'

From: GCIDE
  • Dueler \Du"el*er\, n. One who engages in a duel. [R.] [Written also dueller.] --South. [1913 Webster]