n. The authority or power of a lord or ruler; dominion; sovereignty.n. The territory over which a lord holds jurisdiction; a seigniory, domain, or manor.n. The state or dignity of a lord or nobleman: chiefly , with his or your, as a title used in addressing or mentioning a nobleman, except a duke or an archbishop, who has the title of Grace (his or your).n. In commerce, a royalty.To exercise domination over.n. In mining, a mineral property.