Where does “pessicus” come from?

pessicus (Vulgar Latin) comes from Latin Persicus, from Ancient Greek περσικός, from Ancient Greek Πέρσης, from Old Persian 𐎱𐎠𐎼𐎿, from Proto-Iranian párcuš, from Proto-Indo-Iranian párćuš, from Proto-Indo-European pérḱus — chest; rib.

Ancestry of “pessicus”, step by step

StepLanguageWordMeaning
1LatinPersicusPersian
2Ancient GreekπερσικόςPersian from Persia; pertaining to the Persians
3Ancient GreekΠέρσηςa Persian
4Old Persian𐎱𐎠𐎼𐎿a Persian
5Proto-Iranianpárcušrib
6Proto-Indo-Iranianpárćušrib
7Proto-Indo-Europeanpérḱuschest; rib

Words derived from “pessicus”

Every word from Proto-Indo-European pérḱus →Every word from Proto-Indo-Iranian párćuš →Every word from Proto-Iranian párcuš →