Post-Office box

1. The headmaster of a school wrote to the post-office and asked for post-office box for his school.
   一所学校的校长写信给邮局要求给他的学校一个邮局信箱。

noun

1. a numbered compartment in a post office where mail is put to be called for

   Synonym:    PO BoxPOBcall boxletter box