Sentence:  At the foot of a pretty big pine, and involved in a green creeper, which had even partly lifted some of the smaller bones, a human <WSD>skeleton</WSD> lay, with a few shreds of clothing, on the ground. 
Meaning of the word marked with <WSD> tags:  The system that provides support to an organism, internal and made up of bones and cartilage in vertebrates, external in some other animals.