Gnurra

As defined by the Cleasby & Vigfusson Old Norse to English dictionary:

gnurra

að, to gnarr, grate, as a door moving on the hinges.

Possible runic inscription in Younger Futhark:ᚴᚾᚢᚱᚱᛅ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements