1) Antechamber 2) Entrance hall 3) Foyer 4) Gambling hall 5) Hall 6) Lobby 7) Lobby, often 8) Place for a poker game 9) Place for waiters 10) Reception area 11) Room 12) Vestibule 13) Waiting area 14) Waiting place 1) Antechamber 2) Foyer 3) Lobby 4) Vestibule 
• (n.) A room before, or forming an entrance to, another; a waiting room.
An'te·room noun A room before, or forming an entrance to, another; a waiting room. 
[n] - a large entrance or reception room or area
antechamber noun a large entrance or reception room or area
a room that admits to a larger room. · a waiting room.