Sentence:  At length, recommending himself to God, he let go one end of his cord, and suffered himself to fall down upon an old shed or <WSD>penthouse</WSD>, which, with the weight of his body, fell in with great noise. 
Meaning of the word marked with <WSD> tags:  An outhouse or other structure (especially one with a sloping roof) attached to the outside wall of a building, sometimes as protection from the weather.