| Noun | 1. | 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"club drug - a controlled subtance that is usually taken by young people at dance clubs and raves | |