Type Element Usage Old Norse Meaning & History Old Norse element meaning "to wave, to billow". Related ItemsFamily Tree·Details Given Name DescendantsSteinunn, Þórunn, Unnur(Icelandic) Reidun, Torunn, Unn, Unni(Norwegian) Hreiðunn, Steinunn, Þórunn, Unnr(Old Norse)