1. hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum • Syn: guaiac, guaiacum • Hypernyms: wood • Substance Holonyms: Guaiacum officinale 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 • Syn: Guaiacum officinale • Hypernyms: angiospermous tree, flowering tree • Member Holonyms: Guaiacum, genus Guaiacum • Substance Meronyms: guaiac, guaiacum
