vestibule

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vestibule

any small bodily cavity or space at the entrance to a passage or canal

Vestibule

An intermediate chamber or passage located between the entrance and interior of a building that serves as a shelter or transitional element from exterior to interior space.

vestibule

[′ves·tə‚byül]
(anatomy)
The central cavity of the bony labyrinth of the ear.
The parts of the membranous labyrinth within the cavity of the bony labyrinth.
The space between the labia minora.
(building construction)
A hall or chamber between the outer door and the interior, or rooms, of a building.

vestibule

An anteroom or small foyer leading into a larger space.