Related topics: Plants
birch /bɜːtʃ $ bɜːrtʃ/ noun 1. [countableC, uncountableU]HBP a tree with smooth bark (=outer covering) and thin branches, or the wood from this tree 桦树;桦木
2. the birch British EnglishBrEPUNISH the practice of hitting people with birch sticks as an official punishment 用桦条笞打,鞭笞
→ silver birch