The definition of a tower is a very tall building or structure, a person or thing who pulls something along behind.
The definition of a fortress is a secured and strong place.
Something used in fortifying; esp., a fort or defensive earthwork, wall, etc.
The definition of a fort is a building that has been protected, often because of its military importance.
The condition or quality of being fast, especially:
The definition of a castle is a large fortified building or set of buildings where royalty lives, or a large and impressive house.
Find another word for citadels. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for citadels, like: towers, strongholds, manors, fortresses, fortifications, forts, fastnesses and castles.