This is the 6022nd most frequent Portuguese word.
csa
"csa" is not a word in Portuguese; it appears to be a typo or abbreviation.
In this sentence 'CSA' is used as an abbreviation for a place, possibly a location involved with postal or courier services.
Vou receber um pacote na CSA.
I will receive a package at CSA.
Here, 'CSA' serves as an acronym representing the name of an organization or entity.
CSA é o nome de uma instituição conhecida.
CSA is the name of a well-known institution.
In this case, 'CSA' is understood as a term or acronym related to a specialized topic, like computing.