What does "duke" mean?

Duke: In England, one of the highest order of nobility after princes and princesses of the royal blood and the four archbishops of England and Ireland.

Additional senses

  1. 2.In some European countries, a sovereign prince, without the title of king. Duke's coronet. See Illust. of Coronet. -- To dine with Duke Humphrey, to go without dinner. See under Dine.
  2. 3.To play the duke. [Poetic] Lord Angelo dukes it well in his absence. Shak.

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