letter_box
1. [ noun ] public box for deposit of mail
Synonyms: mailbox postbox
Related terms: maildrop pillar_box
2. [ noun ] a numbered compartment in a post office where mail is put to be called for
Synonyms: POB call_box post-office_box
Related terms: compartment
3. [ noun ] a private box for delivery of mail
Synonyms: mailbox
Related terms: box
Similar spelling:   letter_bond
  letter_bomb
  letter-bomb
  letter_paper
  letter_opener