Lagga

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

lagga

að, [lögg], to put the bottom into a cask.

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