noun
- The number of a letter box at the post office where mail is collected.
- synonyms: post-office box number, PO box number, PO Box No
- A mailing address to which answers to a newspaper ad can be sent. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). box number. Retrieved September 20, 2026, from http://smartdefine.org/box_number/definitions/1224024 |
| Chicago | WordNet. 2010. "box number" http://smartdefine.org/box_number/definitions/1224024 (accessed September 20, 2026). |
| Harvard | WordNet 2010, box number, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/box_number/definitions/1224024>. |
| MLA | WordNet. "box number" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/box_number/definitions/1224024> |