9 Grammatical Pitfalls


[gwah-noh] /ˈgwɑ noʊ/
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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for guano
  • Bats also come and go, leaving behind guano, and their dead.
  • The dining room had that stench of fruit bat guano that you often get in old colonial buildings with a metal roof and a ceiling.
  • Although there is a large literature on dung-inhabiting fungi, much less research has focused on bat guano in caves.
  • Their guano carries diseases and that alone should be a enough to convince you otherwise.
  • guano consists of bird droppings, which were used as fertilizer.
  • guano and guano-derived deposits are listed at the end of the table, but sorted in the same order.
  • All guano collected from an individual was regarded as a single sample.
  • Nests are placed in recesses in rocks, under piles of mined guano, or burrows that they excavate under vegetation.
  • Bat guano is an excellent fertilizer because it is high in nitrates.
  • Be alert for birds that you may not be able to see around guano-covered rocks and pinnipeds hauled out on secluded beaches.
British Dictionary definitions for guano


noun (pl) -nos
  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
any similar but artificial substance used as a fertilizer
Word Origin
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
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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
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guano in Science
  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.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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