or Fenris. The wolf of sin [i.e. of Loki], meaning the goading of a guilty conscience. The “wolf” was the brother of Hel ( q.v.). When he gapes, one jaw touches earth and the other heaven. In the Ragnarok he swallows the sun and conquers Odin; but being conquered by Vidar, he was cast into Niflheim, where Loki was confined.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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