was a kindly frost giantess who helped the Germanic thunder god Thor in his struggle against Geirrod. Thor had been lured by Loki, the fire god, into danger without the protection of his magic belt of strength and his magic hammer. Grid loaned Thor her own belt, iron gloves and unbreakable staff to face Geirrod. In some traditions she is said to have borne Odin a son, the silent god Vidar, and to have made for him a special shoe which enabled him to stand in the mouth of the wolf.