Where does “kotkansulka” come from?

kotkansulka (Finnish) comes from Finnish sulka, from Proto-Finnic sulka, from Proto-Uralic tulka — feather.

kotkansulka (Finnish): eagle feather

Definitions

  1. eagle feather

Ancestry of “kotkansulka”, step by step

kotkansulka traces back through two separate lines of ancestry.

via Finnish sulka

StepLanguageWordMeaning
1Finnishsulkafeather; windscreen wiper rubber blade
2Proto-Finnicsulkafeather
3Proto-Uralictulkafeather

via Finnish Kotka

StepLanguageWordMeaning
1FinnishKotkaThe constellation Aquila
Every word from Proto-Uralic tulka →Every word from Proto-Finnic sulka →Every word from Finnish sulka →