a·ya·hua·sca 
(ī′yə-wäskə, ä′yə-)
(ī′yə-wäskə, ä′yə-)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.
[American Spanish, from Quechua, rope of the dead, narcotic : aya, corpse + huasca, rope.]