/ Dictionary / Index A ayahuasca: Meaning and Definition of Find definitions for: a•ya•huas•ca Pronunciation: (ä"yu-wä'sku), [key] — n. a woody South American vine, Banisteriopsis caapi, of the malpighia family, having bark that is the source of harmine, a hallucinogenic alkaloid used by Amazon Indians. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ayah Ayana Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language