Hypertext Webster Gateway: "guano"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Guano \Gua"no\, n.; pl. {Guanos}. [Sp. guano, fr. Peruv. huanu
dung.]
A substance found in great abundance on some coasts or
islands frequented by sea fowls, and composed chiefly of
their excrement. It is rich in phosphates and ammonia, and is
used as a powerful fertilizer.
From WordNet (r) 1.7 (wn)
guano
n : the excrement of sea birds; used as fertilizer
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