Systurbarn

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

systurbarn

n. sister’s child, nephew, niece.

Possible runic inscription in Younger Futhark:ᛋᚢᛋᛏᚢᚱᛒᛅᚱᚾ

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