Húnbora

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

húnbora

f. the hole in the mast-head through which the halyard went; vinda segl við húnboru, to hoist the sail.

Possible runic inscription in Younger Futhark:ᚼᚢᚾᛒᚢᚱᛅ

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