A vestibule is a small entrance hall or passage between the outer door and the inside of a building or room. It acts as a kind of buffer space between outdoors and indoors.
From Latin 'vestibulum', meaning 'entrance court', possibly related to 'vestis' (garment), suggesting a place where you change clothes. It entered English through French and architectural Latin.
Your house’s vestibule and your inner ear’s ‘vestibular system’ share the same root: both are about entrances and balance at the threshold. One handles the step from outside to inside; the other handles the step between standing and falling. It’s a doorway word used for both buildings and bodies.
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