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birch oil

3 ENTRIES FOUND:
  1. birch oil (noun)
  2. sweet birch (noun)
  3. sweet-birch oil (noun)

birch oil

noun \ˈbərch-\

Definition of BIRCH OIL

: an essential oil that consists chiefly of methyl salicylate and is obtained from the bark and twigs of the sweet birch (Betula lenta)—called also betula oil, sweet-birch oil; compare oil of wintergreen