citadel noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of citadel noun from the Oxford Advanced American Dictionary

citadel

noun

NAmE//ˈsɪt̮ədəl//

, NAmE//ˈsɪt̮əˌdɛl//

1(in the past) a castle on high ground in or near a city, where people could go when the city was being attacked

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2(figurative) citadels of private economic power

See citadel in the Oxford Advanced Learner's Dictionary

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