noun,plural gua·nay·es [gwuh-nahy-eys; Spanish gwah-nah-yes], /gwəˈnaɪ eɪs; Spanish gwɑˈnɑ yɛs/, gua·nays.
a cormorant, Phalacrocorax bougainvillii, of islands off the coasts of Peru and Chile, a chief source of guano.
First recorded in 1855–60; from South American Spanish guanae, apparently as back formation from Colonial Spanish huanaes, as plural of huano guano, taken as the name of the bird that produced it
- Also called guanay cormorant.
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