Where does “vilkkuvihreä” come from?

vilkkuvihreä (Finnish) comes from Finnish vihreä, from Proto-Finnic viherä, from Proto-Finnic viha, from Proto-Finnic wiša, from Proto-Indo-Iranian wišás, from Proto-Indo-European wisós — fluidity, slime, poison; poison; poison; slime;...

vilkkuvihreä (Finnish): flashing green light, as used in pedestrian signals to signify that the light is about to turn red

Definitions

  1. flashing green light, as used in pedestrian signals to signify that the light is about to turn red

Ancestry of “vilkkuvihreä”, step by step

vilkkuvihreä traces back through two separate lines of ancestry.

via Finnish vihreä

StepLanguageWordMeaning
1Finnishvihreägreen; The color green
2Proto-Finnicviherägreen
3Proto-Finnicvihahate, anger; rage; agression
4Proto-Finnicwiša—
5Proto-Indo-Iranianwišáspoison, venom
6Proto-Indo-Europeanwisósfluidity, slime, poison; poison; poison; slime;...

via Finnish vilkku

StepLanguageWordMeaning
1Finnishvilkkublinker; turn signal
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns
Every word from Proto-Indo-European wisós →Every word from Proto-Indo-Iranian wišás →Every word from Proto-Finnic wiša →