Where does “pystykouru” come from?

pystykouru (Finnish) comes from Finnish pysty-, from Finnish pysty, from Finnish pistää, from Proto-Finnic pistädäk, from Proto-Finno-Permic pistä-.

Ancestry of “pystykouru”, step by step

Step	Language	Word	Meaning
1	Finnish	pysty-	upright, erect, vertical
2	Finnish	pysty	Indicative present connegative form of pystyä;...
3	Finnish	pistää	to poke, thrust; to stick, prick, stab, puncture;...
4	Proto-Finnic	pistädäk	to poke, to thrust, to stab, to sting; to put, to...
5	Proto-Finno-Permic	pistä-	—