Where does “jousipatja” come from?

jousipatja (Finnish) comes from Finnish patja, from Proto-Finnic patja, from Proto-Germanic badją, from Proto-Indo-European bʰēdʰ-, from Proto-Indo-European bʰedʰ- — to bend, to press; to stab, dig; to dig.

jousipatja (Finnish): spring mattress

Definitions

spring mattress

Ancestry of “jousipatja”, step by step

jousipatja traces back through two separate lines of ancestry.

via Finnish patja

Step	Language	Word	Meaning
1	Finnish	patja	mattress; stratum, layer of soil, air, water;...
2	Proto-Finnic	patja	pillow, cushion; mattress
3	Proto-Germanic	badją	bed; bedding
4	Proto-Indo-European	bʰēdʰ-	to bend, fold
5	Proto-Indo-European	bʰedʰ-	to bend, to press; to stab, dig; to dig

via Finnish jousi

Step	Language	Word	Meaning
1	Finnish	jousi	bow; spring; musical bow
2	Finnish	joutsi	—

Every word from Proto-Indo-European bʰedʰ- →Every word from Proto-Indo-European bʰēdʰ- →Every word from Proto-Germanic badją →