anteroom[an′tē ro̵̅o̅m, -ti-]
anteroom definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a room leading to a larger or more important room; waiting room
anteroom definition by American Heritage Dictionary
An outer room that opens into another room, often used as a waiting room.