Definition of marijuana noun from the Oxford Advanced American Dictionary

 

marijuana

 noun
(also marihuana)noun
NAmE//ˌmærəˈwɑnə//
 
(informal pot)[uncountable]
 
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a drug (illegal in many countries) made from the dried leaves and flowers of the hemp plant, which gives the person smoking it a feeling of being relaxed synonym cannabis
See the Oxford Advanced Learner's Dictionary entry: marijuana