Where does “kirjamerkki” come from?

kirjamerkki (Ingrian) comes from Finnish merkki, from Old Swedish mærki, from Old Norse merki, from Proto-Germanic markō, from Proto-Indo-European morǵ- — edge, boundary, border; frontier, border.

Ancestry of “kirjamerkki”, step by step

kirjamerkki traces back through two separate lines of ancestry.

via Finnish merkki

StepLanguageWordMeaning
1Finnishmerkkimark, sign; character; symbol
2Old Swedishmærki—
3Old Norsemerkiboundary
4Proto-Germanicmarkōborder, boundary; region, area
5Proto-Indo-Europeanmorǵ-edge, boundary, border; frontier, border

via Ingrian kirja

StepLanguageWordMeaning
1Ingriankirjabook
2Proto-Finnickirjadecoration, carving, pattern
Every word from Proto-Indo-European morǵ- →Every word from Proto-Germanic markō →Every word from Old Norse merki →