Sentence:  The door of the room now flew open, and, after pushing in her <WSD>hoop</WSD> sideways before her, entered Lady Bellaston, who having first made a very low courtesy to Mrs Fitzpatrick, and as low a one to Mr Jones, was ushered to the upper end of the room. 
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.