Where does “lahtipenkki” come from?

lahtipenkki (Finnish) comes from Finnish Lahti, from Finnish lahdata, from Swedish slakta, from Middle Low German slachten, from Proto-Germanic slahaną, from Proto-Indo-European slak- — to hit; strike; to hit, strike, throw; to hit,...

Ancestry of “lahtipenkki”, step by step

lahtipenkki traces back through two separate lines of ancestry.

via Finnish Lahti

Step	Language	Word	Meaning
1	Finnish	Lahti	a city in southern Finland
2	Finnish	lahdata	To slaughter
3	Swedish	slakta	to slaughter, to butcher
4	Middle Low German	slachten	—
5	Proto-Germanic	slahaną	to hit, to strike; to kill
6	Proto-Indo-European	slak-	to hit; strike; to hit, strike, throw; to hit,...

via Finnish penkki

Step	Language	Word	Meaning
1	Finnish	penkki	bench; plant bed
2	Old Swedish	bænker	bench
3	Old Norse	benkr	—
4	Proto-Germanic	bankiz	a raised surface; bulge; hillock; slope; bench
5	Proto-Indo-European	bʰeg-	to break

Every word from Proto-Indo-European slak- →Every word from Proto-Germanic slahaną →Every word from Middle Low German slachten →