Where does “perunkirja” come from?

perunkirja (Finnish) comes from Finnish peru, from Finnish perä, from Proto-Finno-Ugric perä, from Proto-Uralic *perä — hindquarters, back part of something.

Ancestry of “perunkirja”, step by step

perunkirja traces back through two separate lines of ancestry.

via Finnish peru

StepLanguageWordMeaning
1Finnishperuheritage; origin; Indicative present connegative...
2Finnishperärear, back, tail end; stern, aft; far end or side...
3Proto-Finno-Ugricperä—
4Proto-Uralic*perähindquarters, back part of something

via Finnish kirja

StepLanguageWordMeaning
1Finnishkirjabook; quire
2Proto-Finnickirjadecoration, carving, pattern
Every word from Proto-Uralic *perä →Every word from Proto-Finno-Ugric perä →Every word from Finnish perä →