As defined by the Cleasby & Vigfusson Old Norse to English dictionary:
- tjörugr (tjǫrugr)
- adj. tarred; tjörgum árum, Hornklofi, (but in mod. usage uncontr. throughout.)
Orthography: The Cleasby & Vigfusson book used letter ö to represent the original Old Norse vowel ǫ. Therefore, tjörugr may be more accurately written as tjǫrugr.
Possible runic inscription in Younger Futhark:ᛏᛁᚢᚱᚢᚴᚱ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements