Mektugr

As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):

mektugr

a. mighty, powerful.

Possible runic inscription in Younger Futhark:ᛘᛁᚴᛏᚢᚴᚱ

Also available in related dictionaries:

This headword also appears in dictionaries of other languages closely related to Old Icelandic.

• Old Norse - Cleasby & Vigfusson Dictionary
• Old Norwegian - Johan Fritzner's Dictionary