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guano Line breaks: guano
Pronunciation: /ˈɡwɑːnəʊ/

Definition of guano in English:

noun (plural guanos)

[mass noun]
1The excrement of seabirds and bats, used as fertilizer.
Example sentences
  • Millennia of visiting seabirds left large fossilized guano deposits on Nauru.
  • The copious guano deposition from sea birds may play a role in maintaining the present assemblage of vascular plants on both islands.
  • They rip up bin bags, deposit vast quantities of guano on our favourite statuary, and even attack people.
1.1An artificial fertilizer resembling natural guano, especially one made from fish.


Early 17th century: from Spanish, or from Latin American Spanish huano, from Quechua huanu 'dung'.

Words that rhyme with guano

Americano, Arno, boliviano, Bolzano, Carnot, chicano, Kano, llano, Locarno, Lugano, Marciano, Marrano, meccano, oregano, Pisano, poblano, Romano, siciliano, soprano, Sukarno

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