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English definition of “methamphetamine”

methamphetamine

noun [U]     /ˌmeθ.æmˈfet.ə.miːn/ US  /-fet̬-/ (also slang crystal meth, meth)
a drug that makes your mind and body more active. It is addictive (= you cannot stop taking it when you have started) and some people take it illegally.Specific types of drugDrugs - general wordsSpecific medicines and drugs
(Definition of methamphetamine noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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