Definition of gray birch
1
: a small birch (Betula populifolia) of northeastern North America that has many lateral branches, grayish-white bark, triangular leaves, and soft weak wood and that occurs especially in old fields reverting to woodland
2
: yellow birch
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Merriam-Webster unabridged
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Time Traveler for gray birch
The first known use of gray birch was in 1846
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