Regula

Meaning of Old Norse word "regula"

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

regula

u, f. = regla.

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