amphetamine

Short definition from Wiktionary

Noun

1. 1
   The racemic freebase of 1-phenylpropan-2-amine; an equal parts mixture of levoamphetamine and dextroamphetamine in their pure amine forms.
2. 2
   Any mixture of the two amphetamine enantiomers, dextroamphetamine and levoamphetamine.
3. 3
   Referring to a substituted amphetamine; a member of the amphetamine class of chemicals.
4. 4
   A potent central nervous system stimulant of the phenethylamine chemical class that is used to treat ADHD, narcolepsy, and obesity.