A short dictionary entry from Knight's American Mechanical Dictionary defining 'cop' and 'coppin' in spinning. It describes the conical ball of thread wound on a spindle or tube, the copping-reel that distributes yarn on the bobbin, and the double-cone form of cops made on mule spindles. It also covers the second sense, a tube or quill for winding silk for market. Fig. 1442 illustrates a bobbin and a cop.