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Noun drug  has 1 sense
drug - a substance that is used as a medicine or narcotic--1 is a kind of agent
 --1 is a part of pharmacopoeia
 --1 has particulars:
 |  | abortifacient, aborticide, abortion-inducing drug; agonist; anesthetic, anaesthetic, anesthetic agent, anaesthetic agent; antagonist; antisyphilitic; anti-TNF compound; brand-name drug, proprietary drug; controlled substance; dilator; diuretic drug, diuretic, water pill; drug of abuse, street drug; Feosol; Fergon; fertility drug; generic drug; intoxicant; levallorphan, Lorfan; medicine, medication, medicament, medicinal drug; mydriatic, mydriatic drug; narcotic; pentoxifylline, Trental; psychoactive drug, mind-altering drug, consciousness-altering drug, psychoactive substance; psychotropic agent; relaxant; soporific, hypnotic; stimulant, stimulant drug; suppressant, appetite suppressant; synergist; virility drug, anit-impotence drug | 
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