'lignum vitae' definitions:

Hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum [syn: 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 [syn: lignum vitae, Guaiacum officinale]