what is a peyote button
Medical Definition of PEYOTE. 1. : a hallucinogenic drug containing mescaline that is derived from peyote buttons and used especially in the religious ceremonies of some American Indian peoples.2.edical Definition of PEYOTE. 1. : a hallucinogenic drug containing mescaline that is derived from peyote buttons and used especially in the religious ceremonies of some American Indian peoples.