This is the 9996th most frequent Spanish word.
calvo
Bald.
Here, 'calvo' is used as an adjective to describe the man's appearance, specifically that he has no hair on his scalp.
El hombre calvo compró un sombrero nuevo.
The bald man bought a new hat.
In this sentence, 'calvo' is applied in the phrase 'quedarse calvo,' indicating the process of becoming bald, showing an action or transformation related to the state of being bald.
Antes de quedarse calvo, tenía una hermosa cabellera.
Before going bald, he had beautiful hair.
'Calvo' is used as a noun here to refer to an individual characterized as bald, highlighting its use as a substantivized adjective.