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• po
  po

  noun

  a chamber pot.
• Po
  Po

  noun

  a river in Italy, flowing E from the Alps in the NW to the Adriatic. 418 miles (669 km) long.
• p.o.
  p.o.

  abbreviation

  (in prescriptions) by mouth.
• PO
  PO

  abbreviation

  post office. Also P.O.
• P.O.
  P.O.

  abbreviation

  post office. Also PO

po

¹ American  

[poh] / poʊ /

noun

Australia and New Zealand.

pos plural

1. a chamber pot.

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Po ² American  

[poh] / poʊ /

noun

1. a river in Italy, flowing E from the Alps in the NW to the Adriatic. 418 miles (669 km) long.

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Po ³ American  

Symbol, Chemistry.

1. polonium.

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p.o. ⁴ American  

abbreviation

1. (in prescriptions) by mouth.

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PO ⁵ American  

abbreviation

1. post office. Also P.O.

2. Baseball. putout; putouts.

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P.O. ⁶ American  

abbreviation

1. post office. Also PO

2. parole officer.

3. petty officer.

4. Chiefly British. postal (money) order.

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PO ¹ British  

abbreviation

1. Post Office

2. Personnel Officer

3. petty officer

4. Pilot Officer

5. Also: p.o..  postal order

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Po ² British  

symbol

1. polonium

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Po ³ British  

/ pəʊ /

noun

1. Latin name: Padus.  a river in N Italy, rising in the Cottian Alps and flowing northeast to Turin, then east to the Adriatic: the longest river in Italy. Length: 652 km (405 miles)

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po ⁴ British  

/ pəʊ /

noun

1. an informal word for chamber pot

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Other Word Forms

Inflected Forms

noun

• pos
  plural

Etymology

Origin of po¹

1875–80; probably < French pot ( de chambre ) chamber pot

Origin of p.o.⁴

From Latin per ōs

Example Sentences

Many life insurance companies use PO boxes — and as I learned the hard way, you can only send mail to PO boxes via the United States Postal Service.

From Salon • Mar. 24, 2026

The plane in which PO Smith was flying was "a primary weapon of the war in the Pacific".

From BBC • Oct. 26, 2024

We don't talk about how much the revolving door of sending people back to jail is just based on who your PO was, who your lawyer was, who your judge was that day.

From Salon • Jun. 8, 2023

PO leader Donald Tusk hit back at the PiS allegations on Friday, labelling the government a “promoter of worm soup”.

From Reuters • Mar. 3, 2023

The envelope was addressed to his PO box.

From "We Are Okay" by Nina LaCour

Related Words

• postal service