Triumvir

n. pl. L. Triumviri (#), E. Triumvirs (#).

1. One of tree men united in public office or authority.
   

In later times the triumvirs of Rome were three men who jointly exercised sovereign power. Julius Cæsar, Crassus, and Pompey were the first triumvirs; Octavianus (Augustus), Antony, and Lepidus were the second and last.