Where does “Χοασραο” come from?

Χοασραο (Bactrian) comes from Proto-Iranian *Hhucráwāh, from Proto-Indo-Iranian *Hsućráwās, from Proto-Indo-Iranian ćráwas, from Proto-Indo-European ḱléwos, from Proto-Indo-European ḱlew-, from Proto-Indo-European ḱel- — to cover; to incline.

Ancestry of “Χοασραο”, step by step

StepLanguageWordMeaning
1Proto-Iranian*Hhucráwāhrenowned, famous, of good repute
2Proto-Indo-Iranian*Hsućráwāsfamous
3Proto-Indo-Iranianćráwasfame
4Proto-Indo-Europeanḱléwosfame
5Proto-Indo-Europeanḱlew-to hear
6Proto-Indo-Europeanḱel-to cover; to incline
Every word from Proto-Indo-European ḱel-Every word from Proto-Indo-European ḱlew-Every word from Proto-Indo-European ḱléwos