1) The spur of the domestic cock, that is the sharp projection on its tarsus.
It occurs as a name which became hereditary for a brief period in Wakefield, probably a nickname: 1284 German Cokspore, Stanley
1307 John Cockespore, Stanley
1315 John Cokspur, Stanley. A similar name had its origin in Lancashire: 1314 ‘Thomas, son of Christiana Skot ... which Thomas is called Cockehakel’, Sowerby.