1 of 3


plural poos
informal : feces
It will please me no end to read about someone booked for leaving his dog's poo on a pavement or in some other public place.Alan John
Cameron Diaz writes in The Body Book about inspecting your poo to monitor your health.Lisa Freedman
informal : the act of defecating
Kate has a giant Great Dane she brings everywhere. It takes a poo on Carly's floor.Ty Burr


2 of 3


pooed; pooing; poos

intransitive verb

: defecate
An Australian couple found themselves upstaged during their own wedding by their 3-year-old son, who interrupted the ceremony to announce: "I have to poo."Ben Hooper
When proper citizens of Rome were lowering their bottoms onto indoor toilet seats, my ancestors were using the woods to do their business. I suspect they just squatted and pooed without the benefit of a hole.Jim Jones


3 of 3


US, informal
used to suggest that something is small, unimportant, or childish in some way

Examples of poo in a Sentence

Recent Examples on the Web
The Apollo poo bags were left on the moon before the establishment of the Committee on Space Research guidelines, which are nonbinding, but Lopez suggested in his paper that a similar disposal of waste on the moon might be prohibited today. Becky Ferreira, WIRED, 25 June 2024 Life The spider that looks like bird poo – and other tricks animals deploy to survive Disgusting behavior is often crucial to survival. Big Think, 24 June 2024
Burps and poo from cattle, sheep and goats generate methane, a greenhouse gas 80 times more powerful than carbon dioxide in warming the planet in the span of 20 years, according to the UN Environment Programme. Sandee Lamotte, CNN, 10 June 2024 Read: Dog poo, an environmental tragedy Menin shared with me a recent study in which researchers found an average of 31,000 fecal bacteria per 100 milliliters of puddle water from New York City’s sidewalks. Kelly Conaboy, The Atlantic, 26 July 2023 See all Example Sentences for poo 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'poo.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History



baby talk


derivative of poo entry 1


origin unknown

First Known Use


circa 1960, in the meaning defined at sense 1


1975, in the meaning defined above

Time Traveler
The first known use of poo was circa 1960

Dictionary Entries Near poo

Cite this Entry

“Poo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/poo. Accessed 20 Jul. 2024.

Last Updated: - Updated example sentences
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