methylenedioxymethamphetamine: 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
club drug: a controlled substance that is usually taken by young people at dance clubs and raves
intraocular pressure: pressure exerted by the fluids inside the eyeball; regulated by resistance to the outward flow of aqueous humor