Definition of 'guaiacum'

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Noun

1. medicinal resin from the lignum vitae tree
2. hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum
      Synonyms: lignum vitae guaiac
3. small genus of evergreen resinous trees or shrubs of warm and tropical America
      Synonyms: genus Guaiacum

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