citadel
noun
[ ˈsɪtəd(ə)l ]
• a fortress, typically one on high ground above a city.
• "the garrison withdrew into the citadel"
Similar:
fortress,
fort,
stronghold,
fortification,
castle,
burg,
keep,
tower,
donjon,
bunker,
fastness,
alcazar,
hold,
• a meeting hall of the Salvation Army.
Origin:
mid 16th century: from French citadelle, or from Italian cittadella, based on Latin civitas ‘city’ (see city).
