Dictionary.com
Thesaurus.com
Synonyms

guano

American  
[gwah-noh] / ˈgwɑ noʊ /

noun

  1. a natural manure composed chiefly of the excrement of sea birds, found especially on islands near the Peruvian coast.

  2. any similar substance, as an artificial fertilizer made from fish.


guano British  
/ ˈɡwɑːnəʊ /

noun

    1. the dried excrement of fish-eating sea birds, deposited in rocky coastal regions of South America: contains the urates, oxalates, and phosphates of ammonium and calcium; used as a fertilizer

    2. the accumulated droppings of bats and seals

  1. any similar but artificial substance used as a fertilizer

"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

guano Scientific  
/ gwänō /
  1. A substance composed chiefly of the dung of sea birds or bats, accumulated along certain coastal areas or in caves and used as fertilizer.

  2. Any of various similar substances, such as a fertilizer prepared from ground fish parts.


Etymology

Origin of guano

First recorded in 1595–1605; from Spanish: “fertilizer, dung”; Latin American Spanish huano “dung,” from Quechua wanu “dung for fuel, fertilizer”

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.

The latter elements suggest the hearth was intentionally sealed with a mixture of guano and sand, which can protect plant materials within the hearth from catching fire—conditions needed to create tar.

From Science Magazine

Their guano, or dung, can also be used as fertilizer.

From Los Angeles Times

The seabirds' droppings, known as guano, carry nitrogen and phosphorus, important nutrients that leach into the surrounding seas fertilising surrounding coral reef environments.

From Science Daily

And so sprang up a gigantic industry dedicated to the harvesting of guano from Latin American bird colonies, where there were huge piles of the stuff.

From BBC

Researchers have discovered a new avenue by which viruses may spread from bats to other mammals: in bat guano eaten by chimpanzees and other animals.

From Science Magazine