Niða-myrkr

Meaning of Old Norse word "niða-myrkr"

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

niða-myrkr

n. ‘nið-mirk,’ pitch darkness and no moon; þeir höfðu skriðljós með sér, en niðamyrkr var úti, Ó. H. 71, Fms. ii. 5; n. var á, Eg. 216, 235, Fms. viii. 429: the word is now used without thinking of the moon, simply = pitch darkness; also kol-niðamyrkr, coal-pitch-dark.

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