As defined by the Cleasby & Vigfusson Old Norse to English dictionary:
- f., pl. vinstrar, = the third stomach in ruminating animals; eina vinstr, vinstrina, freq. in mod. usage, but not recorded in old writers.
Possible runic inscription in Younger Futhark:ᚢᛁᚾᛋᛏᚱ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements
- frequent, frequently.