Where does “metsäsopuli” come from?

metsäsopuli (Finnish) comes from Finnish sopuli, from Russian собо́ль, from Old East Slavic соболь, from Proto-Slavic *sobolь — sable (Martes zibellina).

metsäsopuli (Finnish): wood lemming

Definitions

wood lemming

Ancestry of “metsäsopuli”, step by step

metsäsopuli traces back through two separate lines of ancestry.

via Finnish sopuli

Step	Language	Word	Meaning
1	Finnish	sopuli	lemming; lemming, true lemming; Norway lemming,...
2	Russian	собо́ль	sable
3	Old East Slavic	соболь	sable (Martes zibellina)
4	Proto-Slavic	*sobolь	sable (Martes zibellina)

via Finnish metsä

Step	Language	Word	Meaning
1	Finnish	metsä	forest, woods; bush; hunting
2	Proto-Finnic	*meccä	—
3	Proto-Baltic	medjas	—

Every word from Proto-Slavic *sobolь →Every word from Old East Slavic соболь →Every word from Russian собо́ль →