dŭumvĭrātus

ūs, m.

duumviri

I. the office of a duumvir, duumvirate, Plin. Ep. 4, 22, 1; Dig. 50, 3, 1; Inscr. Orell. 3817 (Momms. 2096; 4059).
Lewis & Short
A Latin Dictionary, 1879
An open-access project