In Norse mythology, Nidhogg ("tearer of corpses") was the monster that ate the roots of the World Tree, Yggdrasil and swore at the eagle living in the tree's branches. Nidhogg also ate corpses.
... end of the second line is in locative
plural. Translated: "...in them".
History
Sanskrit is the oldest member of Indo-Aryan[?] sub-branch of Indo-Iranian[?]. ...