Grunn-mál

Meaning of Old Norse word "grunn-mál"

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

grunn-mál

n. shallow soundings in the sea.

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