hard greenish-brown wood of the lignum vitae tree and other
trees of the genus Guaiacum Synonym(s):lignum vitae, guaiac, guaiacum
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 Synonym(s):lignum vitae, Guaiacum officinale