vestibule

(architecture) A large entrance hall in a temple or palace.

(rail transport) An enclosed entrance at the end of a railway passenger car.

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.

The part of the left ventricle below the aortic orifice.

The part of the mouth outside the teeth and gums.

Clipping of vulval vestibule: the space in the vulva between the labia minora and into which both the urethra and vagina open.