Definition of “barrage balloon” - English Dictionary

british dictionary

“barrage balloon” in British English

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barrage balloonnoun [ C ]

uk /ˈbær.ɑːʒ bəˌluːn/ us /bəˈrɑːʒ bəˌluːn/

a large balloon, especially one of a group that is tied to the ground with metal ropes in order to stop enemy aircraft that are flying low

(Definition of “barrage balloon” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)