Where does “lusikka-haarukka” come from?

lusikka-haarukka (Finnish) comes from Finnish lusikka, from Old East Slavic лъжька, from Proto-Slavic lyžьka, from Proto-Slavic -ьka, from Proto-Balto-Slavic -ikaʔ, from Proto-Indo-European -ikeh₂.

Ancestry of “lusikka-haarukka”, step by step

lusikka-haarukka traces back through two separate lines of ancestry.

via Finnish lusikka

StepLanguageWordMeaning
1Finnishlusikkaspoon
2Old East Slavicлъжькаspoon
3Proto-Slaviclyžьkaspoon
4Proto-Slavic-ьka—
5Proto-Balto-Slavic-ikaʔ—
6Proto-Indo-European-ikeh₂—

via Finnish haarukka

StepLanguageWordMeaning
1Finnishhaarukkafork; range, bracket; Short for etuhaarukka
2Finnishhaarabranch; fork, bifurcation; offshoot
3Proto-Finnichaarabranch
Every word from Proto-Indo-European -ikeh₂ →Every word from Proto-Slavic -ьka →Every word from Proto-Slavic lyžьka →