Where does “ястреб” come from?
ястреб (Russian) comes from Proto-Slavic *àstrę̄bъ, from Proto-Balto-Slavic ṓˀśuptrembas, from Proto-Indo-European h₁ōḱú-pth₂r̥, from Proto-Indo-European h₂eḱ- — sharp.
ястреб (Russian): hawk; hawk, warmonger
Ancestry of “ястреб”, step by step