Crossword clues for guanos
The Collaborative International Dictionary
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.