Ferrus (en. Ferrus)
/ˈfer.us/
Slang Meanings
Used to refer to someone strong or resilient.
That guy is a true ferrus in the gym.
Ese tipo es un verdadero ferrus en el gimnasio.
It applies to being very stubborn or inflexible.
He doesn't back down from his opinion; he's a ferrus.
No cede en su opinión, es un ferrus.