mailbox

Noun

mail=box

CIDE DICTIONARY

mailbox, n.

A public box for deposit of mail, where it is later picked up by the postal authority for delivery. [WordNet 1.5]
A private box to recieve delivery of mail. The term is used both for boxes receiving mail delivered by the public postal authority, or by a private services, such as for mail to employees in large corporations. [WordNet 1.5]
A location within a computer storage device where electronic mail is held until it is retrieved by the addressee. Creation and use of an electronic mailbox requires special software as well as a data storage device. [PJC]

mailbox, n. US a letter-box.

For further exploring for "mailbox" in Webster Dictionary Online

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phrase	search for verses that contains all of the search phrase.	"fish bread" will search for verses that contains "fish bread" in minimum 1 bible version
at least one	search for verses that contains any of the search words.	"fish bread" will search for verses that contains fish OR bread in minumum 1 bible version
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