1. (North American English mail slot)
   a narrow opening in a door or wall through which mail is delivered
   • ● The postman put a bundle of letters through the letter box.
   Topics

   Definitions on the go

   Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.

2. (North American English mailbox)
   a small box near the main door of a building or by the road, which mail is delivered to Compare : pillar box, postbox

[TahlilGaran] English Dictionary ▲