pedernal
flint
pedal
foot-operated lever
+
piedra
stone
Pedernal means flint and is related to the Spanish word piedra1 (stone1), as flint is a type of stone.
noun
- flintA hard, fine-grained rock used to make tools or start firesLos antiguos usaban pedernal para hacer herramientas. // The ancients used flint to make tools.