n. [ Icel. gul-önd. ] An arctic sea bird. [ 1913 Webster ]

n. ((Zool.) Any one of many species of large gallinaceous birds of Central and South America, belonging to Penelope, Pipile, Ortalis, and allied genera. Several of the species are often domesticated. [ 1913 Webster ]

n. (Zool.) See Iguana. [ 1913 Webster ]

n.; pl. Guanacos [ Sp. guanaco, Peruv. huanacu. Cf. Huanaco. ] (Zool.) A South American mammal (Auchenia huanaco), allied to the llama, but of larger size and more graceful form, inhabiting the southern Andes and Patagonia. It is supposed by some to be the llama in a wild state. [ Written also huanaco. ] [ 1913 Webster ]

n. (Physiol. Chem.) A strongly alkaline base, NH2.CNH.NH2, formed by the oxidation of guanin, and also obtained combined with methyl in the decomposition of creatin. Boiled with dilute sulphuric acid, it yields urea and ammonia. [ 1913 Webster ]

a. [ Guano + -ferous. ] Yielding guano. Ure. [ 1913 Webster ]

n. (Physiol. Chem.) A crystalline substance (C5H5N5O) contained in guano. It is also a constituent of the liver, pancreas, and other glands in mammals. [ 1913 Webster ]

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. [ 1913 Webster ]