Pukra

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

pukra

að, to do stealthily, to do a thing ‘í pukri.’

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