Noun
caapi (uncountable)
A hallucinogen, obtained from the South American vine, Banisteriopsis caapi, used medicinally by indigenous peoples of the Amazon.
In Brazil, the brew and the liana are informally called either caapi or cipó; the latter is the Portuguese word for liana (or woody climbing vine). Source: Internet
In the União do Vegetal of Brazil, an organised spiritual tradition in which people drink ayahuasca, the brew is prepared exclusively from B. caapi and P. viridis. Source: Internet
Thus, ayahuasqueros and most others working with the brew maintain that the Banisteriopsis caapi vine is the defining ingredient, and that this beverage is not ayahuasca unless B. caapi is in the brew. Source: Internet