Synonyms: pep pill, speed, amphetamine, upper
Definition: a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
Similar words: drug of abuse, street drug
Definition: 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
Similar words: stimulant, stimulant drug, excitant
Definition: a drug that temporarily quickens some vital process