noun Scandinavian Mythology.
a serpent in Niflheim who gnaws upon the lowermost root of Yggdrasil.
Also Nid·hug [need-hœg] /ˈnid hœg/.
Origin of Nidhogg
< Old Norse Níthhǫgg, equivalent to níth evil + hǫgg hewer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for nidhogg
Historical Examples of nidhogg
The squirrel named Ratatosk runs up and down the ash, and seeks to cause strife between the eagle and Nidhogg.The Elder Eddas of Saemund Sigfusson; and the Younger Eddas of Snorre Sturleson
Saemund Sigfusson and Snorre Sturleson