Where does “slunečník” come from?
slunečník (Czech) comes from Czech slunce, from Old Czech slunce, from Proto-Slavic sъlnьce, from Proto-Balto-Slavic *súlˀnis, from Proto-Indo-European sóh₂wl̥ — sun.
slunečník (Czech): umbrella
Ancestry of “slunečník”, step by step