GUAIACUM, noun gua'cum. Lignum vitae, or pock wood; a tree produced in the warm climates of America. The wood is very hard, ponderous and resinous. The resin of this tree, or gum guaiacum is of a greenish cast, and much used in medicine as a stimulant.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI