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M.J.

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  1. Master of Journalism.
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Mary Jane2

[mair-ee jeyn]
noun Slang.
  1. marijuana.Abbreviation: MJ
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Also mar·y·jane [mair-ee-jeyn] /ˈmɛər iˌdʒeɪn/.

Origin of Mary Jane2

1925–30; translation of Mexican Spanish marijuana, by the popular assumption that it is a compound of Spanish María and Juana
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for mj

Contemporary Examples

Historical Examples

  • Though himself now considerably excited, Alex sought to reassure the MJ man.

    The Young Railroaders

    Francis Lovell Coombs


British Dictionary definitions for mj

mary jane

noun
  1. US and Canadian a slang term for marijuana
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012