Where does “arinakivi” come from?

arinakivi (Finnish) comes from Finnish arina, from Finnish äristä, from Finnish -ista — Forms frequentative verbs.

Ancestry of “arinakivi”, step by step

arinakivi traces back through two separate lines of ancestry.

via Finnish arina

StepLanguageWordMeaning
1Finnisharinagrate, grating
2FinnishäristäTo snarl
3Finnish-istaForms frequentative verbs

via Finnish kivi

StepLanguageWordMeaning
1Finnishkivistone; a piece of stone which is larger than a...
2Latin-lanominative feminine singular of -lus; nominative...
Every word from Finnish -ista →Every word from Finnish äristä →Every word from Finnish arina →