A smaller room serving as an entryway into a larger room.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "antechamber" in a sentence
"Of her influence we need no better evidence than the fact that her salon was called the antechamber to the Academie Francaise."
"The moment we stepped over the threshold, on the right hand of the passage we found ourselves ushered into what in other countries would be called the antechamber; the ground floor, however, was muddy and filthy, a large fire was burning,"
"The only article of furniture in the antechamber was a wooden bench on which Pierre perceived two female patients awaiting their turn in the charge of a young hospitaller."