|1.||any synthetic, semisynthetic, or natural chemical substance used in the treatment, prevention, or diagnosis of disease, or for other medical reasonsRelated: pharmaceutical|
|2.||a chemical substance, esp a narcotic, taken for the pleasant effects it produces|
|3.||drug on the market a commodity available in excess of the demands of the market|
|—vb , drugs, drugging, drugged|
|4.||to mix a drug with (food, drink, etc)|
|5.||to administer a drug to|
|6.||to stupefy or poison with or as if with a drug|
|Related: pharmaceutical, pharmaco-|
|[C14: from Old French drogue, probably of Germanic origin]|
A substance used in the diagnosis, treatment, or prevention of a disease or as a component of a medication.
Such a substance as recognized or defined by the U.S. Food and Drug Administration.
A chemical substance, such as a narcotic or hallucinogen, that affects the central nervous system, causing changes in behavior and often addiction.
To administer a drug, especially in an overly large quantity, to an individual.
To stupefy or dull with or as if with a drug; to narcotize.
|drug (drŭg) Pronunciation Key