křemjeń
Upper Sorbian
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d2/Flintstone.jpg/220px-Flintstone.jpg)
Etymology
From Proto-Slavic *kremy; cognate with Lower Sorbian kśemjeń, Polish krzemień, Czech křemen (“quartz”), Russian креме́нь (kreménʹ), Serbo-Croatian krȅmēn.
Noun
křemjeń m
- flint (hard fine-grained quartz which generates sparks when struck)