Tree sparrow Meaning, Definition & Usage
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noun Eurasian sparrow smaller than the house sparrow
Passer montanus.
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noun finch common in winter in the northern U.S.
Spizella arborea.
WordNet
Definitions
(Zoöl.) any one of several species of small arboreal sparrows, especially the American tree sparrow (Spizella monticola ), and the common European species (Passer montanus ).
