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English definition of “vestibule”

vestibule

noun [C] uk   /ˈves.tɪ.bjuːl/ us  
formal a small room just inside the outer door of a public building where you can leave your coat, etc.: I'll wait for you in the vestibule. US a small closed area on the front of a house
Synonym
specialized medical an empty space in the body that is an entrance to a passage or another space: the nasal vestibule
(Definition of vestibule from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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