Where does “fall” come from?

fall (Faroese) comes from Old Norse fall, 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.

fall (Faroese): fall, drop; case