Where does “tetřěv” come from?

tetřěv (Old Czech) comes from Proto-Slavic tetervь, from Proto-Balto-Slavic teterwás, from Proto-Indo-European tetr̥-wó-s, from Proto-Indo-European -wós — Creates adjectives from verb stems.

Ancestry of “tetřěv”, step by step

StepLanguageWordMeaning
1Proto-Slavictetervьgrouse; black grouse
2Proto-Balto-Slavicteterwásgrouse
3Proto-Indo-Europeantetr̥-wó-s
4Proto-Indo-European-wósCreates adjectives from verb stems

Words derived from “tetřěv

Every word from Proto-Indo-European -wósEvery word from Proto-Indo-European tetr̥-wó-sEvery word from Proto-Balto-Slavic teterwás