n. The lignum-vitæ, Guaiacum officinale and G. sanctum.n. In the southwestern United States and Mexico, a shrub or small tree, Porlieria angustifolia, closely related to the lignumvitæ.n. In Argentina, a large leguminous tree, Cæsalpinia melanocarpa, yielding a very hard, heavy wood which resembles lignumvitæ except that it is of a reddish-black color. Its fruits are used for tanning and dyeing in the same manner as divi-divi.n. In Panama, a bignoniaceous tree, Tecoma Guayacan.