a North American tree, Betula lenta, having smooth, blackish bark and twigs that are a source of methyl salicylate.
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Sweet + Sour Synonyms
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Origin of sweet birch
An Americanism dating back to 1775–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for sweet birch
Historical Examples of sweet birch
In the morning we made a fire of ozier, sweet-birch, cherry wood, and samphire.The Little Red Foot
Robert W. Chambers