dope

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A narcotic, especially an addictive narcotic.
• noun Narcotics considered as a group.
• noun An illicit drug, especially marijuana.
• noun A narcotic preparation used to stimulate a racehorse.
• noun Informal A stupid person; a dolt.
• noun Informal Factual information, especially of a private nature.
• noun Chemistry An absorbent or adsorbent material used in certain manufacturing processes, such as the nitroglycerin used in making dynamite.
• noun A type of lacquer formerly used to protect, waterproof, and tauten the cloth surfaces of airplane wings.
• noun Chiefly Southern US A carbonated soft drink containing an extract of the kola nut and other flavorings.
• noun Lower Northern US Syrup or sweet sauce poured on ice cream.
• intransitive verb To administer a narcotic to.
• intransitive verb To add a narcotic to.
• intransitive verb To administer a performance-enhancing substance to (an athlete).
• intransitive verb To subject (an athlete) to blood doping.
• intransitive verb Electronics To treat (a semiconductor) with a dopant.
• intransitive verb To take narcotics or a performance-enhancing substance.
• intransitive verb To engage in blood doping.
• adjective Excellent; outstanding.

from The Century Dictionary.

• noun Any thick liquid, as a thick sauce, thick gruel, or other semi-fluid or pasty thing for eating. Specifically
• noun A thick pasty lubricant; specifically, axle-grease.
• noun . Any absorbent material, as cotton-waste or sand, used to absorb and hold a lubricant or other liquid.
• To drug; stupefy with drugs, such as ‘knock-out drops’ (hydrate of chloral), or the like: as, to dope a race-horse.
• To indulge habitually in the use of opium or other drugs either for the pleasurable sensations produced or as anesthetics.
• noun Opium, especially the thick treacle-like preparation used in opium-smoking.
• noun Any drug, such as opium, laudanum, morphine, cocaine, hydrate of chloral, hashish, etc., which has the property of inducing sleep or of stupefying; a narcotic.
• noun A person under the influence of, or addicted to the use of, some dope.

from the GNU version of the Collaborative International Dictionary of English.

• noun Any thick liquid or pasty preparation, as of opium for medicinal purposes, of grease for a lubricant, etc.
• noun Slang or Cant Any preparation, as of opium, used to stupefy or, in the case of a race horse, to stimulate.
• noun An absorbent material; esp., in high explosives, the sawdust, infusorial earth, mica, etc., mixed with nitroglycerin to make a damp powder (dynamite, etc.) less dangerous to transport, and ordinarily explosive only by suitable fulminating caps.
• noun Sporting Slang Information concerning the previous performances of race horses, or other facts concerning them which may be of assistance in judging of their chances of winning future races; similar information concerning other sports; by extension, any information not generally known, especially when coming from an inside source.
• noun colloq. an ignorant or stupid person.
• noun learn the true story; get the inside information.
• transitive verb Slang, Race-track Slang, Slang, Race-track Slang To treat or affect with dope;
• transitive verb Slang, Race-track Slang, Race-track Slang To give stupefying drugs to; to drug.
• transitive verb Race-track Slang To administer a stimulant to (a horse) to increase his speed. It is a serious offense against the laws of racing.
• transitive verb Slang To judge or guess; to predict the result of, as by the aid of dope.
• transitive verb to impregnate with a dopant.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable Any viscous liquid or paste, such as a lubricant, used in preparing a surface.
• noun uncountable An absorbent material used to hold a liquid.
• noun uncountable, aeronautics Any varnish used to coat a part, such as an airplane wing or a hot-air balloon in order to waterproof, strengthen, etc.
• noun uncountable, slang Any narcotic or similar drug which produces euphoria or satisfies an addiction; particularly heroin, although amphetamine, methamphetamine,
• noun uncountable, slang Any illicit & opioid drug.
• noun uncountable, slang Information.
• noun countable, slang A stupid person.
• verb transitive, slang To affect with drugs.