noun
1. : birch-tar oil
2. : an essential oil obtained from the bark or twigs of the sweet birch that resembles wintergreen oil in consisting chiefly of methyl salicylate and is used similarly to methyl salicylate — called also sweet-birch oil
noun
1. : birch-tar oil
2. : an essential oil obtained from the bark or twigs of the sweet birch that resembles wintergreen oil in consisting chiefly of methyl salicylate and is used similarly to methyl salicylate — called also sweet-birch oil
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012