Tvíkvæntr

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

tvíkvæntr

pp. having two wives at once, bigamous.

Possible runic inscription in Younger Futhark:ᛏᚢᛁᚴᚢᛅᚾᛏᚱ

Also available in related dictionaries:

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

• Old Norwegian - Johan Fritzner's Dictionary