Mármol (en. Marble)
/ˈmaɾ.mol/
Slang Meanings
Term used to refer to a strong or resilient person.
That guy is a marble, he never gives up.
Ese chico es un mármol, nunca se rinde.
It refers to a person with great character or who does not give in easily.
Don't talk to him that way, he's a marble.
No le hables de esa manera, es un mármol.