Princeton's WordNet
bastion, citadel(noun)
a stronghold into which people could go for shelter during a battle
Synonyms:
bastion, citadel
English Synonyms and Antonyms
citadel
Fortification is the general word for any artificial defensive work; a fortress is a fortification of especial size and strength; a fortress is regarded as permanent, and is ordinarily an independent work; a fort or fortification may be temporary; a fortification may be but part of a defensive system; we speak of the fortifications of a city. A citadel is a fortification within a city, or the fortified inner part of a city or fortress, within which a garrison may be placed to overawe the citizens, or to which the defenders may retire if the outer works are captured; the medieval castle was the fortified residence of a king or baron. Fort is the common military term for a detached fortified building or enclosure of moderate size occupied or designed to be occupied by troops. The fortifications of a modern city usually consist of a chain of forts. Any defensible place, whether made so by nature or by art, is a fastness or stronghold.
Synonyms:
castle, fastness, fort, fortification, fortress, stronghold
Dictionary of English Synonymes
citadel(n.)
Synonyms:
FORTRESS, castle, stronghold
PPDB, the paraphrase database
List of paraphrases:
citadelle, bulwark, castle, bastion, stronghold, qal'at
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