a smaller room or vestibule serving as an entryway into a larger one.
In some cases, an antechamber provides a space for a host to prepare or conduct private business away from a larger party or congregation. You will mainly find antechambers in large buildings, homes, or mansions. They are also very common in palaces and crypts. In a theme park, an antechamber may be used to tell guests about a ride before they experience it.
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he would always affect to swagger and look big as he passed by me in the queen’s antechamber,
Jonathan Swift. Gulliver’s Travels (1726)
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As confidence was out of the question with The Avenger in the hall, which could merely be regarded in the light of an antechamber to the keyhole, I sent him to the Play.
Charles Dickens. Great Expectations (1861)
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“How about my son Boris, Prince?” said she, hurrying after him into the anteroom.
Leo Tolstoy. War and Peace: With bonus material from Give War and Peace A Chance by Andrew D. Kaufman . Simon & Schuster
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they followed the servants through an ante-chamber, to the room where Lady Catherine, her daughter, and Mrs. Jenkinson were sitting.