SHEFFIELD, a town in the West Riding of Yorkshire, with a market on Tuesdays, and two fairs, on Tuesday after Trinity-Sunday and November 28, for cattle and horses. It is seated on the river Don, or Dune; and had a strong castle, which was demolished in the late civil wars. It is a large place, whose houses are built of stone, and has been long noted for edge-tools, knives, and swords; for Chaucer, in one of his tales, takes notice of a man with a Sheffield whittle by his side. It is now a place where there is the most considerable manufactures for hardware in England, next to Birmingham. W. Long. 1. 20. N. Lat. 53. 23.