narcotic
nar|cot|ic /nɑːrk'ɒtɪk/ (narcotics)
1 [N-COUNT]
Narcotics are drugs such as opium or heroin which make you sleepy and stop you feeling pain. You can also use narcotics, especially in American English, to mean any kind of illegal drug.
He was indicted for dealing in narcotics...
2 [ADJ]
If something, especially a drug, has a narcotic effect, it makes the person who uses it feel sleepy.
...hormones that have a narcotic effect on the immune system.
1 [N-COUNT]
Narcotics are drugs such as opium or heroin which make you sleepy and stop you feeling pain. You can also use narcotics, especially in American English, to mean any kind of illegal drug.
He was indicted for dealing in narcotics...
2 [ADJ]
If something, especially a drug, has a narcotic effect, it makes the person who uses it feel sleepy.
...hormones that have a narcotic effect on the immune system.