[n] a very wealthy or powerful businessman; "an oil baron" [n] a British peer of the lowest rank [n] a nobleman (in various countries) of varying rank
big businessman, business leader, king, magnate, mogul, power, top executive, tycoon
archduke, aristocracy, aristocrat, armiger, banker, baronet, barons, big boss, big businessman, big gun, big man, big name, bigwig, blue blood, Brahman, brass, brass hat, business leader, businessman, captain of industry, celebrity, count, cream, czar, da