Herðatoppr

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

herðatoppr

m. shoulder tuft (of a horse’s mane).

Possible runic inscription in Younger Futhark:ᚼᛁᚱᚦᛅᛏᚢᛒᛒᚱ

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