This is the 669th most frequent Portuguese word.
portuguesa
"Portuguesa" means "Portuguese" (feminine form), referring to something or someone from Portugal.
Here, "portuguesa" is used as an adjective to describe the noun "cultura," indicating that the culture is characteristic of Portugal.
Eu adoro a cultura portuguesa.
I love Portuguese culture.
In this sentence, "portuguesa" is used as a noun to refer to a woman from Portugal.
A portuguesa venceu a competição internacional.
The Portuguese woman won the international competition.
Here, "portuguesa" is used as an adjective modifying the noun "língua," specifying that the language being referred to is Portuguese.