- methylenedioxymethamphetamine, MDMA - a stimulant drug that is chemically related to mescaline and amphetamine and is used illicitly for its euphoric and hallucinogenic effects; it was formerly used in psychotherapy but in 1985 it was declared illegal in the United States; "MDMA is often used at parties because it enables party-goers to remain active for long periods of time"
--1 is a kind of club drug
--1 has particulars:Adam, ecstasy, XTC, go, disco biscuit, cristal, X, hug drug