Meaning

• A substance used to treat an illness, relieve a symptom, or modify a chemical process in the body for a specific purpose.

  "Aspirin is a drug that reduces pain, acts against inflammation and lowers body temperature."

• A psychoactive substance, especially one which is illegal and addictive, ingested for recreational use, such as cocaine.

• Anything, such as a substance, emotion or action, to which one is addicted.

  "2010, Kesha Rose Sebert (Ke$ha), with Pebe Sebert and Joshua Coleman (Ammo), Your Love is My Drug"

• Any commodity that lies on hand, or is not salable; an article of slow sale, or in no demand.

Meaning

• To administer intoxicating drugs to, generally without the recipient's knowledge or consent.

  "She suddenly felt strange, and only then realized she'd been drugged."

• To add intoxicating drugs to with the intention of drugging someone.

  "She suddenly felt strange. She realized her drink must have been drugged."

• To prescribe or administer drugs or medicines.