Definition of PO
Noun: P.O.
- A noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army
- petty officer, PO
- An independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States
- United States Post Office, US Post Office, Post Office
- A European river; flows into the Adriatic Sea
- Po River
- A radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor
- polonium, atomic number 84
Anagrams containing the word PO