Dóni

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

dóni

a, m. (and compds dóna-legr, -skapr, -háttr); this is a college word, by which the students of the old colleges at Skalholt and Hólar called outsiders as opposed to collegians, like the Philister of Germ. universities: it is still used: from Span. don, through the E. Engl. done, (‘In þi dysch sette not þi spone, noþer on þe brynke, as unlernyd done,’ = einsog ólærðr dóni, as an illiterate clown (used mockingly), Bodl. Ashm. MSS. no. 61, about A. D. 1500, Boke of Curtesy, E. Engl. Text Society, 1868.)

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