What is the meaning of Narcotic?

Any substance or drug that reduces pain, induces sleep and may alter mood or behaviour; in some contexts, especially in reference to the opiates-and-opioids class, especially in reference to illegal drugs, and often both.

Any type of numbing or soothing drug.

Of, or relating to narcotics.

Inducing sleep; causing narcosis.

Source: wiktionary.org

See also