Where does “орьлъ” come from?

орьлъ (Old East Slavic) comes from Proto-Slavic orьlъ, from Proto-Balto-Slavic *arélis, from Proto-Indo-European h₃érō — eagle.

Ancestry of “орьлъ”, step by step

StepLanguageWordMeaning
1Proto-Slavicorьlъeagle
2Proto-Balto-Slavic*aréliseagle
3Proto-Indo-Europeanh₃érōeagle

Words derived from “орьлъ”

Every word from Proto-Indo-European h₃érō →Every word from Proto-Balto-Slavic *arélis →Every word from Proto-Slavic orьlъ →