duke
1 Americannoun
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(in Continental Europe) the male ruler of a duchy; the sovereign of a small state.
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a British nobleman holding the highest hereditary title outside the royal family, ranking immediately below a prince and above a marquis; a member of the highest rank of the British peerage.
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a nobleman of corresponding rank in certain other countries.
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a cultivated hybrid of the sweet and sour cherry.
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Slang. dukes, fists; hands.
Put up your dukes.
verb (used with object)
idioms
noun
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Benjamin Newton, 1855–1929, and his brother, James Buchanan, 1856–1925, U.S. industrialists.
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a male given name.
noun
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a nobleman of high rank: in the British Isles standing above the other grades of the nobility
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the prince or ruler of a small principality or duchy
Other Word Forms
Noun Inflected Forms
Etymology
Origin of duke
First recorded in 1100–50; Middle English duke, duc, late Old English duc, from Old French duc, dus, dux, from Medieval Latin dux “hereditary ruler of a small state,” Latin: “leader”; see dux; duke def. 5 dukes (in the sense “fists”) of unclear derivation and perhaps of distinct origin
Explanation
A duke is a member of a royal or noble group. In some places, dukes rule over certain regions, while in others duke is just an honorary title. In the U.K., a duke inherits his title from his parents. Prince William, for example, is the Duke of Cambridge, while his father Prince Charles is the Duke of Cornwall and Rothesay. The equivalent title for a woman is duchess. Informally, duke has a very different meaning in the U.S. — if you "duke it out," you have a fight, and to "put up your dukes" means to clench your fists and get ready to punch.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The man is Paul, who does not know how he has come to be in this world but finds himself hunted by a mad duke who wants his magical technologies.
From The Wall Street Journal • Jul. 10, 2026
The duke seemed to have hoped to stay at Buckingham Palace.
From BBC • Jul. 7, 2026
Mexico and South Korea duke it out at 9.
From Slate • Jun. 18, 2026
It will be the first time the duke, who lives in California, has visited the UK with his family in four years.
From BBC • Jun. 17, 2026
"Ain't that a wonder! I never heard of a rat-catcher could read and write and do sums. It don't fit. Don't forget your old friends when you grow up to be duke or something."
From "The Whipping Boy" by Sid Fleischman
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.