Úsœra

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

úsœra

(-ða, -ðr), v. to break (~ sinn eið).

Possible runic inscription in Younger Futhark:ᚢᛋᚢᚱᛅ

Also available in related dictionaries:

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

• Old Norwegian - Johan Fritzner's Dictionary