Where does “pilvikatto” come from?

pilvikatto (Finnish) comes from Finnish katto, from Finnish kattaa, from Proto-Finnic kattadak, from Proto-Finnic kanci, from Czech -í, from Old Czech -í, from Proto-Slavic -jь, from Proto-Indo-European yós — fluidity, slime, poison; poison; poison; slime;...

pilvikatto (Finnish): cloud ceiling, overcast cloud cover

Definitions

  1. cloud ceiling, overcast cloud cover

Ancestry of “pilvikatto”, step by step

pilvikatto traces back through two separate lines of ancestry.

via Finnish katto

StepLanguageWordMeaning
1Finnishkattoceiling; roof
2Finnishkattaato roof; to cover; to set, lay
3Proto-Finnickattadakto cover; to roof
4Proto-Finnickancicover, lid
5CzechForming attributive adjectives from nouns,...
6Old Czechforming attributive adjectives from nouns, especially animals
7Proto-Slavic-jьAdjectival inherited from the Caland roots,...
8Proto-Indo-Europeanyósthat, who, which
9Proto-Finnicwiša
10Proto-Indo-Iranianwišáspoison, venom
11Proto-Indo-Europeanwisósfluidity, slime, poison; poison; poison; slime;...

via Finnish Pilvi

StepLanguageWordMeaning
1FinnishPilvicloud visible mass of water droplets suspended in the air; mass of dust, steam or smoke
2Finnishpilvicloud; hashish, marijuana
3Proto-Finnicpilvicloud
4Proto-Uralicpilwecloud
Every word from Proto-Indo-European wisósEvery word from Czech Every word from Proto-Indo-Iranian wišás