birch oil

1. Carbonated drink flavored with an extract from sarsaparilla root or with birch oil and sassafras.
   用菝葜根提取物或白桦油和擦木调味的碳酸饮料。
2. A smooth leather tanned with willow, birch, or oak, and scented on the flesh side with birch oil.
   一种光滑的皮革，经过柳木、桦木、橡木硝制，内壁用桦树油加上香味。

noun

1. a liquid ester with a strong odor of wintergreen

   Synonym:    methyl salicylatesweet-birch oil