·noun One of tree men united in public office or authority.
trĭumvir, vĭri, v. triumviri. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
triumvir or IIIvir virī, genplur. ōrum or ūm, m tres+vir, one of three associates in office, a mem...
An Elementary Latin Dictionary