Main Entry: ves·ti·bule

Pronunciation: \ˈves-tə-ˌbyül\

Function: noun

Etymology: Latin vestibulum forecourt

Date: 1726

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: as a : the central cavity of the bony labyrinth of the inner ear or the parts (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)

— ves·ti·buled \-ˌbyüld\ adjective