Definition of "Duke"

Duke

noun
plural Dukes
1. The title of a duke.
  Quotations
  Percy’s military career began in France under Dukes Henry and John of Lancaster; […]
  2001, John Cannon, editor, A Dictionary of British History, Oxford University Press, published 2004
proper noun
countable and uncountable, plural Dukes
1. (countable) A male given name from English; mostly US and rather rare.
2. (countable) A surname originating as an occupation for service in the household of a duke, or from a nickname.
3. (informal) A male nickname.
  1. (informal, usually with the definite article) The American actor John Wayne.
    Quotations
    "Whoa there, pardner," Kiril said in his best Duke impression, and grabbed hold of the armrest to keep from rolling into Fyodor's lap.
    2000, Dana Stabenow, Midnight Come Again, page 4
4. (informal) Ellipsis of Duke University, a private university in Durham, North Carolina, USA.