- beiska, v. (að) gjøre bitter; beiskast hannnú enn meðr nýju Thom. 14914.
Part of speech: v
Possible runic inscription in Medieval Futhork:ᛒᚽᛁᛋᚴᛆ
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.