‖Tri‐um″vir (?), n.; pl. L. Triumviri (#), E. Triumvirs (#). [L., fr. res, gen. trium, three + vir a man. See Three, and Virile.] (Rom. Antiq.) 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.