Old Norwegian Dictionary - lauptunge?

Meaning of Old Norwegian word "lauptunge?" in Norwegian.

As defined by the Johan Fritzer's Old Norwegian dictionary:

lauptunge? haffde - sælt Tiodulffue -j marckebol jord i - for toe kiørgangende och j louptunge och toe nyokopper kelle DN. XI, 17211 (Aar 1440).

Part of speech: uten ordklasse

Possible runic inscription in Medieval Futhork:ᛚᛆᚢᛕᛏᚢᚿᚵᚽ?
Medieval Runes were used in Norway from 11th to 15th centuries.
Futhork was a continuation of earlier Younger Futhark runes, which were used to write Old Norse.