This is the 1041st most frequent Portuguese word.
castro
A "castro" is an ancient fortified settlement, typically from the Iron Age, found in the Iberian Peninsula.
Here, 'castro' refers to an archaeological term, typically meaning a fortified settlement from ancient times, commonly associated with Celtic cultures.
Visitamos o antigo castro celta nas montanhas.
We visited the ancient Celtic hillfort in the mountains.
In this context, 'castro' is used to refer to a historical site which commonly influences place names.
O nome da cidade evoca o castro que ali existia.
The name of the city evokes the hillfort that once existed there.
In this sentence, 'Castro' is used as a proper noun referring to a familial or geographic surname.