Býleistr
Býleistr is a minor figure in Norse mythology, appearing in the Poetic Edda. He is mentioned in the poem Vafþrúðnismál, a dialogue between Odin in disguise and the giant Vafþrúðnir. During the contest of wits, Vafþrúðnir asks Odin a question about Býleistr: "Tell me now, Odin, since hither thou hast fared, what is that steed which bears the wicked Loki over the wide world?" Odin replies that the steed is Býleistr.
The name Býleistr itself is not extensively explained within the text, but it is widely interpreted as
The reference to Býleistr is one of the few direct mentions of Loki's specific means of travel