Rösull

As defined by the Cleasby & Vigfusson Old Norse to English dictionary:

rösull (rǫsull)

adj. [rasa], apt to stumble, of a horse.

Orthography: The Cleasby & Vigfusson book used letter ö to represent the original Old Norse vowel ǫ. Therefore, rösull may be more accurately written as rǫsull.

Possible runic inscription in Younger Futhark:ᚱᚢᛋᚢᛚᛚ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements