- any of a class of substances that blunt the senses, as opium, morphine, belladonna, marijuana, and alcohol, that in large quantities produce euphoria, stupor, or coma, that when used constantly can cause habituation or addiction, and that are used in medicine to relieve pain, cause sedation, and induce sleep.
- any controlled substance, whether sedative or stimulant: Airports need security solutions that can effectively detect concealed explosives and narcotics.
- anything that exercises a soothing or numbing effect or influence: Television is a narcotic for many people.
- of or having the power to produce narcosis, as a drug.
- pertaining to or of the nature of narcosis.
- of or relating to narcotics or their use.
- used by, or in the treatment of, narcotic addicts.
- any of a group of drugs, such as heroin, morphine, and pethidine, that produce numbness and stupor. They are used medicinally to relieve pain but are sometimes also taken for their pleasant effects; prolonged use may cause addiction
- anything that relieves pain or induces sleep, mental numbness, etc
- any illegal drug
- of, relating to, or designating narcotics
- of or relating to narcotics addicts or users
- of or relating to narcosis
