Kafa

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

kafa

(að), v. to dive, swim, under water; of a ship, to be swamped in a heavy sea (síðan kafaði skipit).

Possible runic inscription in Younger Futhark:ᚴᛅᚠᛅ

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