noun
1.
a system of collecting and delivering letters, etc. :
a good postal service
2.
the Postal Service ( US ) = post office (2)
noun
1.
a system of collecting and delivering letters, etc. :
a good postal service
2.
the Postal Service ( US ) = post office (2)
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005