Barghest, Bargtjest, Bo-guest, Bargest or Barguest is the name often given in the north of England, especially in Yorkshire, to a legendary monstrous black dog with huge teeth and claws, though in other cases the name can refer to a ghost or Household elf, especially in Northumberland and Durham (see Cauld Lad of Hylton). One is said to frequent a remote gorge named Troller's Gill. There is also a story of a Barghest entering the city of York occasionally, where, according to legend, it preys on lone travellers in the city's narrow Snickelways. Whitby is also associated with the spectre. A famous Barghest was said to live near Darlington who was said to take the form of a headless man (who would vanish in flames), a headless lady, a white cat, a dog, rabbit and black dog. Another was said to live in an "uncannie-looking" dale between Darlington and Houghton, near Throstlenest.
The derivation of the word barghest is disputed. Ghost in the north of England was once pronounced guest, and the name is thought to be burh-ghest: town-ghost. Others explain it as German Berg-geist (mountain spirit), or Bär-geist (bear-spirit), in allusion to its alleged appearance at times as a bear. Another mooted derivation is 'Bier-Geist', the 'spirit of the funeral bier'.