The Collaborative International Dictionary
Buchu
Buchu \Bu"chu\, n. (Bot.) A South African shrub ( Barosma) with small leaves that are dotted with oil glands; also, the leaves themselves, which are used in medicine for diseases of the urinary organs, etc. Several species furnish the leaves.
Wiktionary
buchu
n. 1 A South African shrub in the genus ''Agathosma''. 2 (context South African English English) Medicinal leaves from the shrub that are often used in brandy; this is an old Dutch medicine.