Where does “fåll” come from?

fåll (Westrobothnian) comes from Westrobothnian fååll, from Old Norse falla, from Proto-Germanic fallaną, from Proto-Indo-European pōl-, from Slovincian pól, from Proto-Slavic polъ, from Proto-Indo-European (s)pelH- — to split off, separate; to chop, to separate.

Ancestry of “fåll”, step by step

StepLanguageWordMeaning
1WestrobothnianfåållTo fall
2Old Norsefallato fall
3Proto-Germanicfallanąto fall
4Proto-Indo-Europeanpōl-—
5Slovincianpólhalf
6Proto-Slavicpolъside, flank; half; member of a pair of options →...
7Proto-Indo-European(s)pelH-to split off, separate; to chop, to separate
Every word from Proto-Indo-European (s)pelH- →Every word from Proto-Slavic polъ →Every word from Slovincian pól →