from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A hallucinogenic brew made from the bark and stems of a tropical South American vine of the genus Banisteriopsis, especially B. caapi, mixed with other psychotropic plants, used especially in shamanistic rituals by certain Amazonian Indian peoples.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A giant vine native to South America (especially Banisteriopsis caapi), noted for its psychotropic properties.
- n. Any of various psychoactive infusions or decoctions prepared from this vine.
American Spanish, from Quechua, rope of the dead, narcotic : aya, corpse + huasca, rope.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Spanish, from Quechua ayawasca, from aya ‘spirit, ancestor’ + wasca ‘vine’. (Wiktionary)