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1[countable, uncountable] (also birch tree [countable]) a tree with smooth bark and thin branches, that grows in northern regions see silver birch
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- 2(also birchwood NAmE//ˈbɜrtʃwʊd//) [uncountable] the hard pale wood of the birch tree
- 3the birch [singular] the practice of hitting someone with a bunch of birch sticks, used as a punishment, especially in the past
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