Sentence:  He took the removed chair and drew it so near mine, squatting in it with his ugly weight, that he pressed upon my <WSD>hoop</WSD>. 
Meaning of the word marked with <WSD> tags:  A circle, or combination of circles, of thin whalebone, metal, or other elastic material, used for expanding the skirts of ladies' dresses; (hence, by extension) a hoop petticoat or hoop skirt.