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

1.
우체국
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.
이 소포를 부치러 우체국에 가야 해.
•
The post office is open until 5 PM.
우체국은 오후 5시까지 영업해.