*ragnarok*

{ ‖, n. [ Icel., fr. regin, rögn, gods + rök reason, origin, history; confused with ragna-rökr the twilight of the gods. ] (Norse Myth.) The so-called “Twilight of the Gods” (called in German Götterdämmerung), the final destruction of the world in the great conflict between the Aesir (gods) on the one hand, and on the other, the giants and the powers of Hel under the leadership of Loki (who is escaped from bondage). [ Webster 1913 Suppl. ]