noun
- A numbered compartment in a post office where mail is put to be called for.
- synonyms: Post-Office box, POB, call box, letter box
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). po box. Retrieved September 22, 2026, from http://smartdefine.org/po_box/definitions/1302833 |
| Chicago | WordNet. 2010. "po box" http://smartdefine.org/po_box/definitions/1302833 (accessed September 22, 2026). |
| Harvard | WordNet 2010, po box, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/po_box/definitions/1302833>. |
| MLA | WordNet. "po box" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/po_box/definitions/1302833> |