ˈdrəg How to pronounce drug (audio)

1a : a substance used as a medication or in the preparation of medication

b according to the Food, Drug, and Cosmetic Act

(2) : a substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease prescription drugs drugs for treating high blood pressure

(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 : something and often an illegal substance that causes addiction, habituation (see habituation sense 2b), or a marked change in consciousness keeping teens off drugs heroin and other hard drugs

4 obsolete : a substance used in dyeing or chemical operations

transitive verb

2 : to administer a drug to drugged against pain

3 : to lull or stupefy as if with a drug the kind of overly familiar music that delights most audiences and drugs most critics — Time

dialectal past tense of drag