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1. Hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum
   - guaiac, guaiacum
    
2. Small evergreen tree of Caribbean and southern Central America to northern South America; a source of lignum vitae wood, hardest of commercial timbers, and a medicinal resin
   - Guaiacum officinale

Derived forms: lignum vitaes

Type of: angiospermous tree, flowering tree, wood

Part of: genus Guaiacum, Guaiacum

Encyclopedia: Lignum vitae