guaiacum

(noun) medicinal resin from the lignum vitae tree.

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

(noun) small genus of evergreen resinous trees or shrubs of warm and tropical America. Synonyms: Guaiacum, genus Guaiacum.