methamphetamine

noun Pharmacology.

1. a central nervous system stimulant, C10H15N, used clinically in the treatment of narcolepsy, hyperkinesia, and for blood pressure maintenance in hypotensive states: also widely used as an illicit drug.

noun

1. a variety of amphetamine used for its stimulant action

n.1949, from methyl + amphetamine; so called because it was a methyl derivative of amphetamine.

1. An amine derivative of amphetamine, C10H15N, used in the form of its crystalline hydrochloride both as a central nervous system stimulant in the medical treatment of obesity and attention deficit hyperactivity disorder and illicitly as a recreational drug.