Synonyms

poo

American

[poo] / pu /

noun

Slang.

excrement.

verb (used without object)

Slang.

pooed, pooing

to defecate.

poo British

/ puː /

interjection

another spelling of pooh

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of poo

First recorded in 1955–60; of expressive origin

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Hepatitis A is a liver infection that can spread via the poo of an infected person.

From BBC • May 6, 2026

The average adult produces more than a liter of urine and over 100 grams of poo each day.

From Science Daily • Apr. 13, 2026

Infected birds shed the parasite in their saliva and poo, contaminating food sources when they feed.

From BBC • Apr. 9, 2026

Dog poo bags are not the only indignity the famous defensive frontier has to endure.

From BBC • Apr. 6, 2026

And I didn’t want to use the toilet because of the poo, which was the poo of people I didn’t know and brown, but I had to because I really wanted to wee.

From "The Curious Incident of the Dog in the Night-Time" by Mark Haddon

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

poo