The story
- Old Norsehár
- Proto-Indo-European*ǵerh₂-
- Proto-Germanic*karaz
- Proto-Germanic*karilaz
- Proto-Norseᚲᚨᚱᛁᛚᚨᛉ (karilaʀ)
- Old Norsekarl
- Old Norsehákarl
- Icelandichákar
- English todayhákarl
Borrowed from Icelandic hákarl (“shark”).
Etymology from Wiktionary, CC BY-SA 4.0.