postbox
/ˈpoʊstˌbɑks/
noun
- A public container, often on a street or in a wall, where letters and small packages are deposited for collection and delivery by the postal service.
- I dropped my letter in the red postbox on the corner before the last collection time.
- She painted the old postbox a bright blue to match the town's new color scheme.
- The postbox outside the library is emptied every weekday at noon.