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 (ī′yə-wä′skə, ä′yə-)
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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌaɪəˈwɑːskə) or


(Plants) a Brazilian plant, Banisteriopsis caapi, that has winged fruits and yields a powerful hallucinogenic alkaloid sometimes used to treat certain disorders of the central nervous system: family Malpighiaceae
[C20: from Quechua]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɑ yəˈwɑ skə)

n., pl. -cas.
a woody South American vine, Banisteriopsis caapi, of the malpighia family, having bark that is the source of harmine, a hallucinogenic alkaloid used by Indians of the Amazon basin.
[< American Spanish; further orig. uncertain]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
could not bar a church's religious use of hoasca, a tea brewed from
(119) A Christian Spiritist sect from Brazil, O Centro Espirita Beneficente Uniao de Vegetal, used hoasca tea for sacramental purposes of receiving communion.
nonprofit corporation sought to use hoasca, a Schedule I controlled
Human psychopharmacology of hoasca, a plant hallucinogen used in ritual context in Brazil.
Tofoli, "An epidemiological surveillance system by the UDV: mental health recommendations concerning the religious use of hoasca," in The Internationalization of Ayahuasca, B.
418, 433 (2006) (finding RFRA exemption for religious use of hoasca, a Schedule 1 hallucinogen, based on the already existing statutory exemption for peyote, another Schedule 1 hallucinogen); Burwell v.
418, 423 (2006) (affirming under RFRA an injunction that prohibited the government's enforcing the Controlled Substances Act against a religious sect's religious use of hoasca, a tea that contained a hallucinogen).
(1) To give just one example, the Supreme Court unanimously protected the use of hoasca when used sacramentally by a small Brazilian religious group, even though presumably no one on the Court uses hoasca or thinks it efficacious in worship.
(168.) For example, allowing sacramental use of hoasca, an otherwise illegal drug, does not burden any third party.