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English definition of “mailbox”

mailbox

noun [C]  /ˈmeɪlˌbɑks/ us  
a metal container in a public place where you can put a letter you are sending by mail, or a box outside a person’s house where letters are sent and delivered A mailbox on a computer is the place where e-mail is received, sent, and stored.
(Definition of mailbox from the Cambridge Academic Content Dictionary © Cambridge University Press)
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