Sentence:  Anna Pavlovna's soirée was now in full swing. On all sides the <WSD>spindles</WSD> were humming away non-stop. 
Meaning of the word marked with <WSD> tags:  A rod used for spinning and then winding natural fibres (especially wool), usually consisting of a shaft and a circular whorl positioned at either the upper or lower end of the shaft when suspended vertically from the forming thread.