Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “poo”


noun [C or U] uk   /puː/ UK (US poop) child's word us  
(a piece of) solid waste from the body: Ugh, it looks like poo! Have you done a poo, Ellie?Excrement and its excretion
verb [I] uk   UK informal us  
Ten minutes after we'd left home, Anna announced that she needed to poo.Excrement and its excretion
(Definition of poo from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of poo?
Add Cambridge dictionaries to your browser to your website

Word of the Day


a type of dark brown beer with a bitter taste

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More