As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):
frost Old Icelandic word can mean:
- n. frost;
- ~ var veðrs, it was frosty weather;
- in pl., ~ mikil ok kuldar, much frost and cold;
- ~ ok snjóar, frost and snow.
Possible runic inscription in Younger Futhark:ᚠᚱᚢᛋᛏ