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donjon

American  
[duhn-juhn, don-] / ˈdʌn dʒən, ˈdɒn- /

noun

  1. the inner tower, keep, or stronghold of a castle.


donjon British  
/ ˈdʌndʒən, ˈdɒn- /

noun

  1. Also called: dungeon.  the heavily fortified central tower or keep of a medieval castle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of donjon

Variant of dungeon

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.

Turning to Google, I learned that the English word dungeon emerged several centuries ago from the French donjon, which in turn is thought to have descended from dominio, which is Latin for lord or master.

From Slate • Sep. 25, 2017

However, both donjon and dungeon originally referred to and still refer to, secondarily, a castle keep.

From Slate • Sep. 25, 2017

Oldest part of the grim little hamlet was a "broch tower": a crude donjon keep.

From Time Magazine Archive

There was also the donjon keep, and the remains of a fosse; but all the rest of this feudal castle had been unceremoniously carted away, to erect cowsheds and pig-styes with it.

From From Squire to Squatter A Tale of the Old Land and the New by Stables, Gordon

The ancient square donjon of the eleventh century, known as the Tour de C�sar, still looms high above the town.

From Castles and Chateaux of Old Touraine and the Loire Country by Mansfield, M. F. (Milburg Francisco)