Drug

v. administer a medication, sedate; poison; mix food with a drug

n. natural or artificial substance used as a medication; narcotic, opiate, hallucinogen

A drug, broadly speaking, is a substance used as a medicine or narcotic. There is no single, precise definition, as there are different meanings in medicine, government regulations, and colloquial usage. In pharmacology, Dictionary.com defines a drug as "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being." Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders. Recreational drugs are chemical substances that affect the central nervous system, such as narcotics or hallucinogens. They may be used for perceived beneficial effects on perception, consciousnesss, personality, and behavior. Some recreational drugs can cause addiction and habituation.
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In J. R. R. Tolkien's legendarium, the Drúedain are a fictional race of Men which were counted amongst the Edain. They were also know as Drûgin (singular being Drug), Woses, Wild Men of the Woods and Púkel-men.The Drûgin lived among the Second House of Men, the Haladin, in the First Age in the forest of Brethil. They were an alien folk to the other Men: a bit like Dwarves in stature and endurance, stumpy, clumsy-limbed (with short, thick legs, and fat, "gnarled" arms), had broad chests, fat bellies, and heavy buttocks. According to the Elves and other Men, they had "unlovely faces": wide, flat, and expressionless with deep-set black eyes that glowed red when angered. They had "horny" brows, flat noses, wide mouths, and sparse, lank hair. They had no hair lower than the eyebrows, except for a few men who had a tail of black hair on the chin. They were short lived and had a deep hatred of Orcs. They were known to have certain magical powers and to be still in meditation for long periods of time. Although a number of the Drúedain were present in Númenor they had left or died out before the Akallabêth, as had the Púkel-men of Dunharrow. At the end of the Third Age the Drûg still lived in the Drúadan Forest of the White Mountains, and at the long cape of Andrast west of Gondor. The region north of Andrast was still known as Drúwaith Iaur, or "Old Drûg land".
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Drug 1. a chemical substance that affects the processes of the mind or body. 2. any chemical compound used in the diagnosis, treatment, or [more]Drug - Community and Resources

Noun
1. a substance that is used as a medicine or narcotic
(hypernym) agent
(hyponym) abortifacient, aborticide, abortion-inducing drug
(part-holonym) pharmacopoeia
(derivation) do drugs
(class) generic
Verb
1. administer a drug to; "They drugged the kidnapped tourist"
(synonym) dose
(hypernym) medicate, medicine
(hyponym) anesthetize, anaesthetize, anesthetise, anaesthetise, put to sleep, put under, put out
(classification) medicine, practice of medicine
2. use recreational drugs
(synonym) do drugs
(hypernym) consume, ingest, take in, take, have
(hyponym) inject
(cause) trip, trip out, turn on, get off

n. drug, narcotic