What is the meaning of letter box?

A numbered compartment in a post office where mail is put to be called for.
- synonyms: Post-Office box, PO Box, POB, call box
Public box for deposit of mail.
- synonyms: postbox, mailbox
A private box for delivery of mail.
- synonyms: mailbox

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APA	WordNet. (2010). letter box. Retrieved September 21, 2026, from http://smartdefine.org/letter_box/definitions/1291257
Chicago	WordNet. 2010. "letter box" http://smartdefine.org/letter_box/definitions/1291257 (accessed September 21, 2026).
Harvard	WordNet 2010, letter box, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/letter_box/definitions/1291257>.
MLA	WordNet. "letter box" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/letter_box/definitions/1291257>

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