drug

1 [druhg]
noun
1.
Pharmacology. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being.
2.
a.
any substance recognized in the official pharmacopoeia or formulary of the nation.
b.
any substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease in humans or other animals.
c.
any article, other than food, intended to affect the structure or any function of the body of humans or other animals.
d.
any substance intended for use as a component of such a drug, but not a device or a part of a device.
3.
a habit-forming medicinal or illicit substance, especially a narcotic.
4.
drugs.
a.
chemical substances prepared and sold as pharmaceutical items, either by prescription or over the counter.
b.
personal hygienic items sold in a drugstore, as toothpaste, mouthwash, etc.
5.
Obsolete. any ingredient used in chemistry, pharmacy, dyeing, or the like.
verb (used with object), drugged, drugging.
6.
to administer a medicinal drug to.
7.
to stupefy or poison with a drug.
8.
to mix (food or drink) with a drug, especially a stupefying, narcotic, or poisonous drug.
9.
to administer anything nauseous to.
Verb phrases
10.
drug up, to take a narcotic drug: The addict prowled about for a place to drug up.
Idioms
11.
drug on the market, a commodity that is overabundant or in excess of demand in the market. Also, drug in the market.

Origin:
1300–50; Middle English drogges (plural) < Middle French drogue, of obscure origin

Dictionary.com Unabridged

drug

2 [druhg]
verb Chiefly Midland and Southern U.S. Nonstandard.
a simple past tense and past participle of drag.

Drug

[droog]
noun Zoroastrianism.
the cosmic principle of disorder and falsehood.
Compare Asha.


Origin:
< Avestan drauga

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
drug (drʌɡ)
 
n
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]
 
'druggy
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

drug
early 14c., "medicine," from O.Fr. drogue, perhaps from M.Du. or M.L.G. droge-vate "dry barrels," with first element mistaken as word for the contents (see dry goods), or because medicines mostly consisted of dried herbs. Application to "narcotics and opiates" is 1883, though association with "poisons"
is 1500s. The verb is from c.1600. Druggie first recorded 1968. Drug-store is 1810; drug-store cowboy is 1925, Amer.Eng. slang, originally one who dressed like a Westerner but obviously wasn't. To be a drug on or in the market (mid-17c.) is of doubtful connection and may be a different word, perhaps drag, which was sometimes drug c.1240-1800.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

drug (drŭg)
n.

  1. A substance used in the diagnosis, treatment, or prevention of a disease or as a component of a medication.

  2. Such a substance as recognized or defined by the U.S. Food and Drug Administration.

  3. A chemical substance, such as a narcotic or hallucinogen, that affects the central nervous system, causing changes in behavior and often addiction.

v. drugged, drug·ging, drugs
  1. To administer a drug, especially in an overly large quantity, to an individual.

  2. To stupefy or dull with or as if with a drug; to narcotize.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
drug   (drŭg)  Pronunciation Key 
  1. A chemical substance, especially one prescribed by a medical provider, that is used in the diagnosis, treatment, or prevention of a condition or disease. Drugs are prescribed for a limited amount of time, as for an acute infection, or on a regular basis for chronic disorders, such as hypertension.

  2. A chemical substance such as a narcotic or a hallucinogen that affects the central nervous system and is used recreationally for perceived desirable effects on personality, perception, or behavior. Many recreational drugs are used illicitly and can be addictive.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Too many doctors write prescriptions while under the influence of drug companies.
Americans are in danger of over-regulating the drug industry.
Cocaine is destroying lives and tearing homes apart-and not simply because of
  drug use.
The drug also has some reportedly pleasant side effects, such as euphoria.
Images for Drug
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