Vestibule

Vestibule or vestibulum can have the following meanings, each primarily based upon a common origin, from early 17th century French, derived from Latin vestibulum, -i n. "entrance court".

Anatomy
In general, vestibule is a small space or cavity at the beginning of a canal.
 * The vulval vestibule is a part of the vulva between the labia minora into which the urinary meatus (urethral opening) and the vaginal opening are situated
 * The nasal vestibule is the nostrils, simply lined with an extension of skin epithelium, in contrast to nasal cavity, which is lined with respiratory epithelium
 * The vestibule of the ear is the central part of the inner ear labyrinth, as used in the vestibular system
 * The vestibulocochlear nerve connects this to the brain
 * The vestibule of larynx is between the epiglottis and rima glottidis
 * The aortic vestibule is the part of the left ventricle of the heart just below the aortic valve
 * The vestibule of mouth is the space between the lips (or cheek) and teeth

Architecture

 * an entryway
 * a lobby, entrance hall, or passage between the outer door and the interior of a building
 * a porch
 * an enclosed area between two railroad cars
 * a reception area
 * an antechamber
 * an entry room
 * a passageway acting as an airlock between two environments

Related:
 * a covered section between the outer opening and inner opening of a tent, typically used for the storage of boots, packs and small equipment

Other

 * The Dleskovec Plateau, a plateau in northern Slovenia
 * The Vestibule of Hell, in Dante's Inferno
 * Articulated bus
 * The jet bridge, a connector from an airport gate to an airplane, allowing passengers to board and disembark
 * The Corridor connection between two railway passenger coaches