Type Element Usage Ancient Scandinavian Meaning & History Old Norse element meaning "to wave, to billow". Family Tree·DetailsRelated Items Given Name DescendantsHreiðunn, Steinunn, Þórunn, Unnr(Ancient Scandinavian) Steinunn, Þórunn, Unnur(Icelandic) Reidun, Torunn, Unn, Unni(Norwegian) Entry added December 3, 2014 ·