Synonyms:
narcotic
Meaning: a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction
Usage examples
"Yes," he said, "it is Gunjab, the most powerful form of Hashish, the narcotic hemp of India.
But on the other hand they might take it too lightly, as the result of overwork, or perhaps of the use of some narcotic.
Tea, when chemically analyzed, is found to contain woody fibre, mucilage, a considerable quantity of the astringent principle, or tannin, a narcotic principle, which is, perhaps, connected with a peculiar aroma.