Grunn-sakka

Meaning of Old Norse word "grunn-sakka"

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

grunn-sakka

u, f. a lead, plumb, (mod.)

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