a drug or chemical substance whose possession and use are controlled by law

a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction

a drug of abuse that is considered relatively mild and not likely to cause addiction

a narcotic (alkaloid) extracted from coca leaves; used as a surface anesthetic or taken for pleasure; can become powerfully addictive

a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush

a mix of heroin and cocaine; the term can also be applied to the mixture of pharmaceutical opioids, benzodiazepines or barbiturates along with amphetamine derivates.