- A leader; a chief; a prince.(Obs)"Hannibal, duke of Carthage." [Sir T. Elyot.]"All were dukes once, who were “duces” -- captains or leaders of their people." [Trench.]
- 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.
- In some European countries, a sovereign prince, without the title of king.
- pl.The fists; as, put up your dukes .(slang)
Etymology: F. duc, fr. L. dux ducis, leader, commander, fr. ducere to lead; akin to AS. teón to draw; cf. AS. heretoga here army) an army leader, general, G. herzog duke. See Tue, and cf. Doge Duchess Ducat Duct Adduce Deduct