Synonyms for letter-box
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- 1. Post-Office box, PO Box, POB, call box, letter box, compartment
- usage: a numbered compartment in a post office where mail is put to be called for
- 2. postbox, mailbox, letter box, maildrop
- usage: public box for deposit of mail
- 3. mailbox, letter box, box
- usage: a private box for delivery of mail