Sentence:  As soon as she was alone and the carriage had been driven well away from the door, Mrs. Trevelyan left the drawing-room and went up to the <WSD>nursery</WSD>. As she entered she clothed her face with her sweetest smile. "How is his own mother's dearest, dearest, darling duck?" she said, putting out her arms and taking the boy from the nurse. 
Meaning of the word marked with <WSD> tags:  A room or area in a household set apart for the care of children; specifically in European countries.