Webster’s Revised Unabridged Dictionary · 1913
Withdrawing-room
With·draw′ing-room′ (·ĭng·ro͞om′), n. [See Withdraw, and cf. Drawing-room.] A room for retirement from another room, as from a dining room; a drawing-room.
A door in the middle leading to a parlor and withdrawing-room. Sir W. Scott.