post office
US /ˈpoʊst ˌɔː.fɪs/
UK /ˈpoʊst ˌɔː.fɪs/

1.
correios, agência dos correios
a building or office where mail is received, sorted, and sent out, and where stamps are sold
:
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I need to go to the post office to mail this package.
Preciso ir aos correios para enviar este pacote.
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The post office is open until 5 PM.
Os correios estão abertos até as 17h.