1. (noun)mescal, mezcal, peyote, Lophophora williamsii a small spineless globe-shaped cactus; source of mescal buttons Synonyms: mezcal, mescaline, peyote, mescal
2. (noun)mescal a colorless Mexican liquor distilled from fermented juices of certain desert plants of the genus Agavaceae (especially the century plant) Synonyms: mezcal, peyote