dŏmĭnātor, ōris, m. [dominor],
ruler , lord : rerum Deus, Cic. N. D. 2, 2, 4; Lact. 2, 14, 2; Vulg. Exod. 34, 6 al.
dominātor ōris, m dominor, a ruler, lord . ...
An Elementary Latin Dictionary
·noun A ruler or ruling power. ...
Webster's Dictionary of the English Language