Ösku

As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):

ösku

from aska, ashes.

Possible runic inscription in Younger Futhark:ᚢᛋᚴᚢ

Also available in related dictionaries:

This headword also appears in dictionaries of other languages closely related to Old Icelandic.

• Old Norse - Cleasby & Vigfusson Dictionary