/ ˈvestɪbjuːl; NAmE / noun
1.
( formal ) an entrance hall of a large building, for example where hats and coats can be left
2.
( technical ) a space at the end of a coach / car on a train that connects it with the next coach / car
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WORD ORIGIN
early 17th cent. (denoting the space in front of the main entrance of a classical Roman or Greek building): from French , or from Latin vestibulum entrance court.