
1) Artifact in Norse mythology 2) Fictional musical instrument
Found on
https://www.crosswordclues.com/clue/gjallarhorn

In Norse mythology, Gjallarhorn (Old Norse `yelling horn` or `the loud sounding horn`) is a mystical horn blown at the onset of Ragnarök associated with the god Heimdallr and the wise being Mímir. Gjallarhorn is attested in the Poetic Edda, compiled in the 13th century from earlier traditional material, and the Prose Edda, written in the 13t...
Found on
http://en.wikipedia.org/wiki/Gjallarhorn

(from the article `Heimdall`) ...the rainbow bridge. He required less sleep than a bird, could see 100 leagues, and could hear grass growing in the meadows and wool growing on ...
Found on
http://www.britannica.com/eb/a-z/g/35
No exact match found.