Where does “ikkuna-avain” come from?

ikkuna-avain (Finnish) comes from Finnish ikkuna, from Finnish akkuna, from Proto-Finnic *akkuna, from Old East Slavic окъно, from Proto-Slavic okъnò — window.

ikkuna-avain (Finnish): removable window handle, detachable window handle especially when sold separately for opening windows

Definitions

  1. removable window handle, detachable window handle especially when sold separately for opening windows

Ancestry of “ikkuna-avain”, step by step

ikkuna-avain traces back through two separate lines of ancestry.

via Finnish ikkuna

StepLanguageWordMeaning
1Finnishikkunawindow; sash
2FinnishakkunaAlternative form of ikkuna
3Proto-Finnic*akkunawindow
4Old East Slavicокъноwindow
5Proto-Slavicokъnòwindow

via Finnish avain

StepLanguageWordMeaning
1Finnishavainkey; code; clef, used especially in compound...
2Finnishavatato open; to unwrap; to turn on
3Proto-Finnicavait'akto open
4Proto-Finno-Ugricaŋa-—
Every word from Proto-Slavic okъnò →Every word from Old East Slavic окъно →Every word from Proto-Finnic *akkuna →