noun. A psychoactive substance, usually one derived from plants or fungi but also from the secretions of animals such as toads, that is ingested by a shaman or another participant in a ritual in order to produce visions or gain mystical insight.

noun. A psychoactive substance used for the purpose of inducing a mystical or spiritual experience.

"Note: the word entheogen refers to a psychoactive plant or chemical used in a spiritual or religious context."

hallucinogen  

enthroned  estrogen