noun
EXAMPLES FROM CORPUS
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Everywhere was thick with greenish slime and off-white guano in this great bird slum.
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Farther south, the millions of seabirds that normally nourish on the famous guano islands are being decimated.
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Fishermen scurry all over the seas catching anchovies; quarrymen have long made a living scraping guano from the bird-rich islands.
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High winds and steep rocks make landing hazardous, and the smell of guano deposits can be significant!
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It may be the most majestic bird guano in Southern California.