The Rune Axe of Grimnir is a runic two-handed axe.[1] Wielded by Grombrindal,[2] it is an impressive weapon that increases the wielder's strength. [1]
It is dedicated to Grimnir[1], and matches the description of the Ancestor God's weapon found in several sagas. Perhaps it is indeed Grimnir's axe, gifted by him to the White Dwarf.[2]