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