noun.
A smaller room serving as an entryway into a larger room.
The Century Dictionary and Cyclopedia
noun.
A chamber or an apartment through which access is had to a principal apartment, and in which persons wait for audience. Formerly also spelled antichamber.
the GNU version of the Collaborative International Dictionary of English
noun.
A chamber or apartment before the chief apartment and leading into it, in which persons wait for audience; an outer chamber. See lobby.
noun.
A space viewed as the outer chamber or the entrance to an interior part.