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English definition of “letterbox”

letterbox

noun [C]   /ˈlet.ə.bɒks/ US  /ˈlet̬.ɚ.bɑːks/ UK
(US mail slot) a rectangular hole in the door or in a wall near the entrance of a house or other building, through which letters, etc. are deliveredDoors and parts of doors (US mailbox) a large, metal container in a public place where you can post lettersThe postal system
(Definition of letterbox noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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