Post office

office which handles postal business; area in a computer which saves electronic mail messages until they are downloaded by a user

A post office is a facility authorized by a postal system for the posting, receipt, sortation, handling, transmission or delivery of mail. Post offices offer mail-related services such as post office boxes, postage and packaging supplies. In addition, some post offices offer non-postal services such as passport applications and other government forms, money orders, and banking services.
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Noun
1. an independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States
(synonym) United States Post Office, US Post Office, PO
(hypernym) independent agency
(member-meronym) local post office

Noun
1. a local branch of the United States Post Office
(synonym) local post office
(hypernym) branch, subdivision, arm
(member-holonym) United States Post Office, US Post Office, Post Office, PO
(part-meronym) general delivery, poste restante
2. a children's game in which kisses are exchanged for pretended letters
(hypernym) child's game

(n.)
See under 4th Post.
  

To dream of a post-office, is a sign of unpleasant tidings. and ill luck generally.