Also found in: Thesaurus.
Related to birch oil: birch beer, sweet birch oil
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|Noun||1.||birch oil - a liquid ester with a strong odor of wintergreen; applied externally for minor muscle and joint pain|
oil of wintergreen, wintergreen oil - oil or flavoring obtained from the creeping wintergreen or teaberry plant
salicylate - a salt of salicylic acid (included in several commonly used drugs)