Where does “kiipeilijähiiri” come from?

kiipeilijähiiri (Finnish) comes from Finnish kiipeilijä, from Finnish jä, from Proto-Finno-Ugric *ja, from Proto-Germanic jahw, from Proto-Germanic -hw, from Proto-Germanic -hwe, from Proto-Indo-European -kʷe — and; Forms distributives from interrogatives.

Ancestry of “kiipeilijähiiri”, step by step

kiipeilijähiiri traces back through two separate lines of ancestry.

via Finnish kiipeilijä

StepLanguageWordMeaning
1Finnishkiipeilijäclimber
2Finnishjäice
3Proto-Finno-Ugric*ja—
4Proto-Germanicjahwand, also
5Proto-Germanic-hwand; Forms distributives from interrogatives
6Proto-Germanic-hwe—
7Proto-Indo-European-kʷeand; Forms distributives from interrogatives

via Finnish hiiri

StepLanguageWordMeaning
1FinnishhiiriA mouse, used rather indiscriminately for a...
2Proto-Finnichiirimouse
3Proto-Uralicšiŋeremouse
Every word from Proto-Indo-European -kʷe →Every word from Proto-Germanic -hw →Every word from Proto-Germanic jahw →