In Northern English folklore, the Barghest or Barguest is a mythical monstrous black dog with large teeth and claws, though in other cases the name can refer to a ghost or household elf, especially in Northumberland and Durham, such as the Cauld Lad of Hylton.

What is meaning of Barguest?

dialectal, England. : a ghost or goblin believed to portend misfortune and sometimes appearing in the shape of a large dog.

What is mean by doubly?

1 : in a twofold manner. 2 : to twice the degree doubly glad doubly frustrating. 3 : in two ways : for two reasons The gentle rain was a doubly good thing because it washed the pollen off our cars.—