[drug] n [ME drogge] (14c) 1 a obs: a substance used in dyeing or chemical operations b: a substance used as a medication or in the preparation of medication c according to the Food, Drug, and Cosmetic Act (1): a substance recognized in an official pharmacopoeia or formulary (2): a substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease (3): a substance other than food intended to affect the structure or function of the body (4): a substance intended for use as a component of a medicine but not a device or a component, part, or accessory of a device
2: a commodity that is not salable or for which there is no demand--used in the phrase drug on the market
3: something and often an illegal substance that causes addiction, habituation, or a marked change in consciousness -- drug.gy also drug.gie adj
[2]drug vb drugged ; drug.ging vt (1605) 1: to affect with a drug; esp: to stupefy by a narcotic drug
2: to administer a drug to
3: to lull or stupefy as if with a drug ~ vi: to take drugs for narcotic effect [3]drug dial past of drag