Where does “korkinavain” come from?

korkinavain (Finnish) comes from Finnish korkki, from Swedish kork, from German Kork, from Dutch kurk, from Middle Dutch curc, from Spanish corcho, from Latin cortex, from Proto-Indo-European *(s)kort-ek-s.

Ancestry of “korkinavain”, step by step

korkinavain traces back through two separate lines of ancestry.

via Finnish korkki

StepLanguageWordMeaning
1Finnishkorkkicork; cap, top, lip
2Swedishkorkcork; bark from the cork oak; cork; bottle...
3GermanKorkcork
4Dutchkurkcork
5Middle Dutchcurccork
6Spanishcorchocork
7LatincortexThe bark of a tree; the bark of a cork tree;...
8Proto-Indo-European*(s)kort-ek-s—

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-Indo-European *(s)kort-ek-s →Every word from Latin cortex →Every word from Spanish corcho →