noun
- The number of a letter box at the post office where mail is collected.
- synonyms: post-office box number, PO box number, box number
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). PO Box No. Retrieved September 20, 2026, from http://smartdefine.org/po_box_no/definitions/1302834 |
| Chicago | WordNet. 2010. "PO Box No" http://smartdefine.org/po_box_no/definitions/1302834 (accessed September 20, 2026). |
| Harvard | WordNet 2010, PO Box No, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/po_box_no/definitions/1302834>. |
| MLA | WordNet. "PO Box No" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/po_box_no/definitions/1302834> |