Where does “haarasokka” come from?
haarasokka (Finnish) comes from Finnish sokka, from Russian Чека́, from Russian ЧК, from Russian Всеросси́йская чрезвыча́йная коми́ссия — All-Russian Extraordinary Commission.
haarasokka (Finnish): split pin; cotter pin
Ancestry of “haarasokka”, step by step