Op

Meaning of Old Norse word "op"

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

op

n. an opening, mouth, of a bag or the like; binda fyrir opið (poka-op), freq. in mod. usage, but does not occur in old writers.

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