- a natural manure composed chiefly of the excrement of sea birds, found especially on islands near the Peruvian coast.
- any similar substance, as an artificial fertilizer made from fish.
Origin of guano
1595–1605; < Spanish: fertilizer, dung; American Spanish huano dung < Quechua wanu dung for fuel, fertilizer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for guano
He was the man who said my browns were all put in with guano.
"I thought you gentlemen were in the guano business," says I, when he had finished.Wild Justice: Stories of the South Seas
We see by this, that the crop used the whole strength of the guano.
The evidence in favor of guano in this case, needs no comment.
Crops of 30 and sometimes 40 bushels have been obtained to the acre with guano.
- 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
- the accumulated droppings of bats and seals
- any similar but artificial substance used as a fertilizer
C17: from Spanish, from Quechuan huano dung
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
Word Origin and History for guano
c.1600, from Spanish guano "dung," especially of sea-birds on islands off Peru, from Quechua huanu "dung."
Online Etymology Dictionary, © 2010 Douglas Harper
- A substance composed chiefly of the dung of sea birds or bats, accumulated along certain coastal areas or in caves and used as fertilizer.
- Any of various similar substances, such as a fertilizer prepared from ground fish parts.
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