ETYM Old Eng. donjoun highest tower of a castle, tower, prison, French donjon tower or platform in the midst of a castle, turret, or closet on the top of a house, a keep of a castle, Late Lat. domnio, the same word as Late Lat. dominus lord.
A close, dark prison, commonly, underground, as in the lower apartments of the donjon or keep of a castle.
1. Oubliette.
2. Cachot.
Cellule.
1. Établissement pénitentiaire.
2. (Littéraire) Geôle.
3. Détention. Maintenir en prison.