baron

noun

1. a nobleman (in various countries) of varying rank

   noun.person

   Source: WordNet 3.0

2. a British peer of the lowest rank

   noun.person

   Source: WordNet 3.0

3. a very wealthy or powerful businessman

   noun.person

   Examples

   An oil baron.

   Synonyms big businessman business leader king magnate mogul power top executive tycoon

   Source: WordNet 3.0

4. A title or degree of nobility; originally, the possessor of a fief, who had feudal tenants under him; in modern times, in France and Germany, a nobleman next in rank below a count; in England, a nobleman of the lowest grade in the House of Lords, being next below a viscount.

   noun

   Source: webster1913