Mescaline has 2 different meanings across 1 category:
Noun
the hallucinatory alkaloid that is the active agent in mescal buttons
A hallucinogenic and intoxicating compound present in the peyote cactus (Lophophora williamsii), the San Pedro cactus (Echinopsis pachanoi), and the Peruvian torch (Echinopsis peruviana).