ᚱᚢᚾᛟ

Etymology
From, accusative singular of.

Noun

 * 1) secret, mystery
 * 2) rune, inscription, message
 * 3) * 4th century, inscription on the Einang stone:
 * "gmq-pro"

- [ᛖᚲ ...]ᛞᚨᚷᚨᛋᛏᛁᛉ ᚱᚢᚾᛟ ᚠᚨᛁᚺᛁᛞᛟ

Declension
This word is never attested in the nominative singular. However, by looking at other ō-stem nouns such as, and at the Old Norse descendant, we can presume that it should have been.