Where does “hasselpähkinä” come from?
hasselpähkinä (Finnish) comes from Swedish hasselnöt, from Swedish hassel, from Old Swedish hæsli, from Old Norse hesli, from Proto-Germanic *hasliją, from Proto-Germanic *haslaz, from Proto-Celtic koslos, from Proto-Indo-European koselos — hazel.
hasselpähkinä (Finnish): hazelnut
Ancestry of “hasselpähkinä”, step by step