guano
noun
gua·no
ˈgwä-(ˌ)nō 
: a fertilizer containing the accumulated excrement of seabirds or bats
broadly
: excrement especially of seabirds or bats
Examples of guano in a Sentence
Recent Examples on the Web
If excluding the bats is a DIY job, clean up the roosting area afterwards so that guano doesn’t attract other pests such as cockroaches and flies.
—
Arricca Elin Sansone, Southern Living, 21 Oct. 2025
All that airborne guano is nature’s marine fertilizer, and scientists have been vastly underestimating how much seabird poop is actually fertilizing our oceans and coastlines.
—Popular Science Team, Popular Science, 10 Sep. 2025
Bat droppings: Also known as guano, these small, dark pellets can be found in windowsills, porches, or the attic.
—Kathy Barnes, Better Homes & Gardens, 9 Aug. 2025
Penguin poop, also known as guano, is notoriously smelly.
—Sara Hashemi, Smithsonian Magazine, 27 May 2025
See All Example Sentences for guano
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Arricca Elin Sansone, Southern Living, 21 Oct. 2025
All that airborne guano is nature’s marine fertilizer, and scientists have been vastly underestimating how much seabird poop is actually fertilizing our oceans and coastlines.
—Popular Science Team, Popular Science, 10 Sep. 2025
Bat droppings: Also known as guano, these small, dark pellets can be found in windowsills, porches, or the attic.
—Kathy Barnes, Better Homes & Gardens, 9 Aug. 2025
Penguin poop, also known as guano, is notoriously smelly.
—Sara Hashemi, Smithsonian Magazine, 27 May 2025
See All Example Sentences for guano
Cite this Entry
“Guano.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guano. Accessed 28 Oct. 2025.
Copy CitationKids Definition
guano
noun
gua·no
ˈgwän-ō
: a substance composed chiefly of the excrement of seabirds or bats and used as a fertilizer
Love words? Need even more definitions?
Merriam-Webster unabridged
Share