In feudal and ecclesiastical law. A lord, or feudal superior. Dominus rex,the lord the king; the king's title as lord paramount. 1 Bl. Comm. 307. Dominuscapitalis, a chief lord. Dominus mcdius, a mesne or intermediate lord. Dominus liyius,liege lord or sovereign. Id.Lord or sir; a title of distinction. It usually denoted a knight or clergyman; and,according to Cowell, was sometimes given to a gentleman of quality, though not aknight, especially if he were lord of a manor.The owner or proprietor of a thing, as distinguished from him who uses it merely.Calvin. A master or principal, as distinguished from an agent or attorney. Story. Ag.