0 (also adjective) (of) a kind of very hard stone -- pazourek
Prehistoric man used flint knives.
1 a piece of hard mineral from which sparks can be struck -- kamínek
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Můžeme to dokončit krok za krokem, ať je cesta jakkoli dlouhá, a nelze ji dokončit, ať je cesta jakkoli krátká, pokud si ani neoznačíte svou stopu.