High Quality Content by WIKIPEDIA articles The term narcotic (pronunciation: /nrktk/, from Greek narko, " benumb") originally referred medically to any psychoactive compound with any sleep-inducing properties. In the United States of America it has since become associated with opioids, commonly morphine and heroin and their derivatives, such as hydrocodone. The term is, today, imprecisely defined and typically has negative connotations. When used in a legal context in the US, a narcotic drug is simply one that is totally prohibited, or one that is used in violation of strict governmental regulation, such as heroin or morphine.