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Meaning of soapbark

soap•bark

Pronunciation: (sōp'bärk"), [key]
— n.
  1. a Chilean tree, Quillaja saponaria, of the rose family, having evergreen leaves and small, white flowers.
  2. the inner bark of this tree, used as a substitute for soap.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.