the sword, Orcrist,comes from the

Orcrist was the weapon of the Dwarf Lord Thorin Oakenshield from Tolkien's novel, The Hobbit.

In Sindarin Orcrist is said to mean "Goblin Cleaver", (Goblin being a synonym for Orc used mainly in The Hobbit). In The Hobbit, the goblins called it Biter. Many of the famed weapons in Tolkien's stories had names, such as Glamdring, Narsil and Sting. It was crafted by the Elves, which not only made it a valuable weapon, but a feared one as well, particularly amongst the traditional enemies of the Elves, being Orcs and other evil creatures of Middle-earth. Like Glamdring and Sting, the blade could detect the presence of Orcs and Goblins, and warn its bearer by glowing blue.

It is ironic that Thorin Oakenshield’s famous sword was not forged by dwarves at all, but by elves of the First Age, and was originally made for the warriors of Gondolin. It was called Orcrist, or Orc-cleaver, and though it had fallen into obscurity by the time Thorin found it, the fear it could strike into the hearts of goblins had not waned with age. They named it Biter, and hated its new owner all the more for bringing it back to the light.