Where does “doze pers” come from?

doze pers (Old French) comes from Old French pers, from Medieval Latin persus, from Latin Persicus, from Ancient Greek περσικός, from Ancient Greek Πέρσης, from Old Persian 𐎱𐎠𐎼𐎿, from Proto-Iranian párcuš, from Proto-Indo-Iranian párćuš — chest; rib.

Ancestry of “doze pers”, step by step

doze pers traces back through two separate lines of ancestry.

via Old French pers

StepLanguageWordMeaning
1Old Frenchperstwelve peers
2Medieval LatinpersusPersian
3LatinPersicusPersian
4Ancient GreekπερσικόςPersian from Persia; pertaining to the Persians
5Ancient GreekΠέρσηςa Persian
6Old Persian𐎱𐎠𐎼𐎿a Persian
7Proto-Iranianpárcušrib
8Proto-Indo-Iranianpárćušrib
9Proto-Indo-Europeanpérḱuschest; rib

via Old French doze

StepLanguageWordMeaning
1Old Frenchdozetwelve
2Vulgar Latindodeci
3Latinduodecimtwelve; 12; dozen
4Latindecemten; 10
5Latin-nus-an
6Proto-Italic-nosCreates verbal adjectives from verb stems
7Proto-Indo-European-nósCreates verbal adjectives from roots
Every word from Proto-Indo-European pérḱus