guano
noun /ˈɡwɑːnəʊ/
/ˈɡwɑːnəʊ/
[uncountable]- the waste substance passed from the bodies of birds that live near the sea, used to make plants and crops grow wellWord Originearly 17th cent.: from Spanish, or from Latin American Spanish huano, from Quechua huanu ‘dung’.