Where does “pertriz” come from?

pertriz (Old French) comes from Latin perdīx, from Ancient Greek πέρδιξ, from Ancient Greek πέρδομαι, from Proto-Hellenic pérdomai, from Proto-Indo-European pérdetor, from Proto-Indo-European perd- — to fart loudly, pass gas, break wind.

Ancestry of “pertriz”, step by step

Step	Language	Word	Meaning
1	Latin	perdīx	partridge
2	Ancient Greek	πέρδιξ	partridge
3	Ancient Greek	πέρδομαι	to fart, break wind
4	Proto-Hellenic	pérdomai	to fart loudly
5	Proto-Indo-European	pérdetor	to be farting
6	Proto-Indo-European	perd-	to fart loudly, pass gas, break wind

Words derived from “pertriz”

partrise
patrise
patrijs

Every word from Proto-Indo-European perd- →Every word from Proto-Indo-European pérdetor →Every word from Proto-Hellenic pérdomai →