SG Heritage Dictionary

Antechamber [Noun] Webster's Dictionary 1828

A chamber or apartment before the chief apartment to which it leads, and in which persons wait for audience.

Antechamber [Noun] Webster's Dictionary 1913

1. A chamber or apartment before the chief apartment and leading into it, in which persons wait for audience; an outer chamber. See Lobby.

2. A space viewed as the outer chamber or the entrance to an interior part.