- [countable, uncountable] (also birch tree [countable])
a tree with smooth bark and thin branches, that grows in northern countries 桦树；白桦树 - [uncountable]
the hard pale wood of the birch tree 桦木 - the birch[singular]
the practice of hitting somebody with a bunch of birch sticks, as a punishment 用桦木条抽打（作为惩罚）
Word OriginOld English bierce, birce, of Germanic origin; related to German Birke.