vestibule
noun
ves·ti·bule
ˈve-stə-ˌbyül
1
a
: a passage, hall, or room between the outer door and the interior of a building : lobby
b
: an enclosed entrance at the end of a railway passenger car
2
: any of various bodily cavities especially when serving as or resembling an entrance to some other cavity or space: such as
a
: the central cavity of the bony labyrinth of the inner ear or the parts (such as the saccule and utricle) of the membranous labyrinth that it contains
b
: the part of the left ventricle below the aortic orifice
c
: the space between the labia minora containing the orifice of the urethra
d
: the part of the mouth cavity outside the teeth and gums
3
: a course that offers access (as to something new)
Cite this Entry
“Vestibule.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vestibule. Accessed 16 Aug. 2026.
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