Where does “szpileczka” come from?

szpileczka (Polish) comes from Polish szpilka, from Italian spilla, from Vulgar Latin spinla, from Latin spīnula, from Latin -ulus, from Proto-Italic -olos, from Proto-Italic -elos, from Proto-Indo-European -e-lós — Forms agent nouns from verbal roots.

Ancestry of “szpileczka”, step by step

StepLanguageWordMeaning
1Polishszpilkapin; stiletto heel; stiletto
2Italianspillabrooch, broach, breastpin; scarfpin; pin
3Vulgar Latinspinla
4Latinspīnula
5Latin-ulusUsed to form a diminutive of a noun, indicating...
6Proto-Italic-olos
7Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
8Proto-Indo-European-e-lós
9Proto-Indo-European-lósForms agent nouns from verbal roots
Every word from Proto-Indo-European -lósEvery word from Latin -ulusEvery word from Latin spīnula