Where does “pumpulilanka” come from?

pumpulilanka (Finnish) comes from Finnish lanka, from Proto-Finno-Ugric *lanka, from Proto-Germanic langô, from Proto-Germanic langaz, from Proto-Indo-European dlongʰos — long.

Ancestry of “pumpulilanka”, step by step

pumpulilanka traces back through two separate lines of ancestry.

via Finnish lanka

Step	Language	Word	Meaning
1	Finnish	lanka	yarn; thread; wire
2	Proto-Finno-Ugric	*lanka	—
3	Proto-Germanic	langô	—
4	Proto-Germanic	langaz	long
5	Proto-Indo-European	dlongʰos	long

via Finnish pumpuli

Step	Language	Word	Meaning
1	Finnish	pumpuli	cotton; lint, cotton
2	Swedish	bomull	cotton; the textile made from the fiber harvested...

Every word from Proto-Indo-European dlongʰos →Every word from Proto-Germanic langaz →Every word from Proto-Germanic langô →