Source : Webster's Revised Unabridged Dictionary (1913)

Lignum rhodium \Lig"num rho"di*um\ (l[i^]g"n[u^]m
   r[=o]"d[i^]*[u^]m). [NL., fr. L. lignum wood + Gr. "ro`don a
   rose.] (Bot.)
   The fragrant wood of several shrubs and trees, especially of
   species of {Rhodorhiza} from the Canary Islands, and of the
   West Indian {Amyris balsamifera}.