noun🔗ShareA hallucinogenic and intoxicating compound present in the peyote cactus (Lophophora williamsii), the San Pedro cactus (Echinopsis pachanoi), and the Peruvian torch (Echinopsis peruviana)."The student experimented with mescaline, a drug derived from the peyote cactus, leading to a very unusual and disturbing experience. "substancecompoundchemistrymedicineplantmindChat with AIVocabulary GamePractice Reading