As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):
vatnfasta Old Icelandic word can mean:
- (að), v. to fast on water.
- f. ‘water-fast’.
Possible runic inscription in Younger Futhark:ᚢᛅᛏᚾᚠᛅᛋᛏᛅ
Also available in related dictionaries:
This headword also appears in dictionaries of other languages closely related to Old Icelandic.