any of several Mexican plants (genus Dioscorea) of the yam family having a large, inedible root that yields extracts used in making synthetic steroidal hormones
See barbasco in American Heritage Dictionary 4
(bär-bäsˈkō)
nounpl.bar·bas·cos
Any of several tropical American plants, as in the genus Lonchocarpus, that contain a substance that can stun or paralyze fish.
Any of several Mexican plants of the genus Dioscorea having a large, inedible root that yields an extract used as a raw material for synthetic steroid hormones.