rag'na-rek, in Old Norse mythology, the twilight of the gods, or doomsday of the gods. Ragnarok was the time when gods and men were to be destroyed,-when in a great battle with the powers of evil, the universe would be utterly consumed by fire. Certain warning signs of the evil day will appear. Then winters broken by no summer will come. War and discord will spread throughout Jotunheim, Alfheim, and Midgard. The earth itself will tremble. Feuris, the wolf, will break his bonds, the Midgard serpent will rise from the sea. Feuris will slay Odin and be himself slain by Odin's son. Thor will kill the serpent, but die from the combat. Loki and Heimdall will fight till both fall dead. While roaring flames fill all space, the "sun will grow dim, the earth sink into the ocean, the stars fall from the sky, and time will be no more." This is Ragnarok.