fafnir

noun Scandinavian Mythology.

1. a dragon, a son of Hreidmar and the brother of Otter and Regin: he killed Hreidmar for the cursed treasure of Andvari and was killed in turn by Sigurd at the instigation of Regin.

noun

1. Norse myth the son of Hreidmar, whom he killed to gain the cursed treasure of Andvari. He became a dragon and was slain by Sigurd while guarding the treasure