American English

Definition of mailbox noun from the Oxford Advanced American Dictionary



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  1. 1 a small box near the main door of a building or by the road, which mail is delivered to
  2. 2 a public box, for example in the street, that you put letters into when you send them
  3. 3the area of a computer's memory where e-mail messages are stored
See the Oxford Advanced Learner's Dictionary entry: mailbox