barbasco

Noun

• A plant (Lonchocarpus urucu (species), now Deguelia rufescens var. urucu (variety)) native to parts of northern South America used as a poison for fishing and an insecticide.
• An evergreen (Jacquinia barbasco (species), now Jacquinia arborea (species))
• One of several inedible wild Mexican yams (Dioscorea mexicana (species) and Dioscorea composita (species)) from which progesterone can be synthesized.