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TAKE THE QUIZ“birch tar”
We have one entry that includes the term birch tar.
birch-tar oil
noun: a brown toxic phenolic oil obtained by destructive distillation of the bark and wood of the European white birch and used in finishing Russia leather to which it gives the characteristic odor and sometimes in ointments for skin diseases (such as eczema)
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Merriam-Webster unabridged
