Definition of sparrow
1
: any of a genus (Passer of the family Passeridae) of small chiefly brownish or grayish Old World oscine songbirds that include some which have been widely introduced
especially
: house sparrow
2
: any of numerous finches (family Emberizidae) that are New World birds (such as the song sparrow or tree sparrow) resembling the Old World sparrows
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Merriam-Webster unabridged
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Time Traveler for sparrow
The first known use of sparrow was before the 12th century
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