an urban district in the north-eastern parliamentary division of Derbyshire, England, 6 m. S. of Sheffield, on the Midland railway. Pop. (1901) 3809. It lies on the small river Drone, a tributary of the Rother, in a busy industrial district in which are numerous coal-mines, and there are iron foundries and manufactures of tools and other iron and steel goods. The church of St John the Baptist, with a lofty spire, is a good example of Decorated work, with Perpendicular additions.