GUANO
guano
(noun) the excrement of sea birds; used as fertilizer
Source: WordNet® 3.1
Etymology
Noun
guano (countable and uncountable, plural guanos or guanoes)
Dung from a sea bird or from a bat.
Hyponyms: birdshit (vulgar), batshit (vulgar)
(obsolete) A variety of seabird.
Anagrams
• Aguon
Source: Wiktionary
Gua"no, n.; pl. Guanos. Etym: [Sp. guano, fr. Peruv. huanu dung.]
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition