Where does “Широв” come from?

Широв (Bulgarian) comes from Azerbaijani şir, from Persian شیر, from Middle Persian šyl, from Proto-Iranian xšiHrám, from Proto-Indo-Iranian kšiHrám — milk.

Ancestry of “Широв”, step by step

StepLanguageWordMeaning
1Azerbaijanişirlion
2Persianشیرlion; faucet, tap; milk
3Middle Persianšyl—
4Proto-IranianxšiHrámmilk
5Proto-Indo-IraniankšiHrámmilk
Every word from Proto-Indo-Iranian kšiHrám →Every word from Proto-Iranian xšiHrám →Every word from Middle Persian šyl →