mŏnŏmăchĭa

ae, f.
I. a single combat, duel (post-class.): cur ad monomachiam recurritis? Cassiod. Var. 3, 24; Serv. Verg. A. 6, 136; Cassiod. Hist. Eccl. 2, 18.
Lewis & Short
A Latin Dictionary, 1879
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