methamphetamine
meth·am·phet·amine
noun\ˌmeth-am-ˈfet-ə-ˌmēn, ˌmeth-əm-, -mən\
Definition of METHAMPHETAMINE
: an amine C10H15N that is used medically in the form of its crystalline hydrochloride C10H15N·HCl especially to treat attention deficit disorder and obesity and that is often abused illicitly as a stimulant—called also meth, methedrine, methylamphetamine, speed
