Term: dextroamphetamine sulphate: an isomer of amphetamine (trade name Dexedrine) used as a central nervous system stimulant
Broader: drug of abuse: a drug that is taken for nonmedicinal reasons (usually for mind-altering effects); drug abuse can lead to physical and mental damage and (with some substances) dependence and addiction | Unrelated: purplish red: a red with a tinge of purple