Ástfóstr

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

ástfóstr

n. loving fosterage (leggja ~ við e-n; fœða e-n upp ~i).

Possible runic inscription in Younger Futhark:ᛅᛋᛏᚠᚢᛋᛏᚱ

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