Sentence:  Ivan Ivanovitch, when the weather gets too warm, throws off his pelisse and his remaining upper garments, and sits, in his <WSD>shirt sleeves</WSD>, on the balcony to observe what is going on in the courtyard and the street. 
Meaning of the word marked with <WSD> tags:  "Preceded by" '''(in)''': wearing only a shirt without a coat, jacket, or comparable protective covering over it.