postal service

Postal service may refer to:United States Postal ServiceMail, anything sent through postal servicesThe Postal Service, an electronic indie pop band
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Noun
1. the system whereby messages are transmitted via the post office; "the mail handles billions of items every day"; "he works for the United States mail service"; "in England they call mail `the post'"
(synonym) mail, mail service, post
(hypernym) communication, communicating
(hyponym) airmail, airpost