(noun) hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum. Synonyms: guaiac, guaiacum.
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Noun Definition 1
(noun) 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. Synonyms: Guaiacum officinale.