birch tar oil

birch tar oil definition - medical

birch tar oil (bûrch)

noun
An oil obtained by the dry distillation of the wood of the white birch and used externally in the treatment of skin diseases.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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