Where does “ਕਸ਼ਮੀਰ” come from?

ਕਸ਼ਮੀਰ (Punjabi) comes from Sanskrit कश्मीर, from Sanskrit कश्यपमीर, from Sanskrit कश्यप, from Proto-Indo-Aryan kaśyápas, from Proto-Indo-Iranian kaćyápas — turtle.

Ancestry of “ਕਸ਼ਮੀਰ”, step by step

StepLanguageWordMeaning
1Sanskritकश्मीर—
2Sanskritकश्यपमीरKashmir
3Sanskritकश्यपa tortoise; having black teeth
4Proto-Indo-Aryankaśyápas—
5Proto-Indo-Iraniankaćyápasturtle
Every word from Proto-Indo-Iranian kaćyápas →Every word from Proto-Indo-Aryan kaśyápas →Every word from Sanskrit कश्यप →