单词	Allen's hummingbird
释义	Allen's hummingbird noun : a hummingbird (Selasphorus sasin) of western North America, the male being metallic green above with bright red throat and whitish breast, the female being variably marked with reddish brown, gray, and white Word History Etymology after Joel A. Allen †1921 American zoologist First Known Use 1881, in the meaning defined above
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