Calló (en. Callus)
/kaˈʝo/
Slang Meanings
Resistance in difficult situations.
That guy has emotional calluses, he never gives up.
Ese tipo tiene callo emocional, nunca se rinde.
Accepting criticism without getting upset.
She has received a lot of criticism about the video, but she has calluses and doesn't care.
Ya le han hecho muchas críticas al video, pero ella tiene callo y no le importa.