guaiacum

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guaiacum

(gwī′ə-kəm)
n.
1. Any of several tropical American trees of the genus Guaiacum; a lignum vitae.
2. also guaiac (gwī′ăk′)
a. The wood of a guaiacum.
b. A greenish-brown resin obtained from this tree, used medicinally and in varnishes.