vestibule
US /ˈves.tə.bjuːl/
UK /ˈves.tə.bjuːl/
1.
a small entrance hall or passage between the outer door and the interior of a house or building
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She waited for him in the vestibule.
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The grand hotel had a spacious vestibule.
2.
an enclosed entrance to a railway carriage, often with sliding doors
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Passengers gathered in the train's vestibule before disembarking.
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The train's vestibule provided a quiet space between carriages.
3.
a chamber or channel opening into another, especially one of the cavities of the inner ear
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The vestibule of the inner ear plays a crucial role in balance.
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The nasal vestibule is the most anterior part of the nasal cavity.