GUAIAC
- greenish-brown resin obtained from the guaiacum tree, esp. from Guaiacum officinale, used in varnishes, as a food preservative, and in medicine in various tests for the presence of blood
- the hard, heavy wood of such a tree; guaiac
- guaiacum 2
- guaiacum (a medicinal resin) [n GUAIACS]
- a medicinal resin, also GUAIACUM, GUAIOCUM [n -S]