Meaning of the word donjon in English

What does donjon mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

donjon

US /ˈdɑːn.dʒən/
UK /ˈdɒn.dʒən/

Noun

the main tower or keep of a castle, typically the strongest and most secure part of the structure

Example:
The king retreated to the donjon during the siege.
From the top of the donjon, they could see for miles.