101 - definition and synonyms

adjective [only after noun] mainly American 

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/ˌwʌn əʊ ˈwʌn/
  1. 1
    consisting of only very basic information about a particular subject

    Everything in her article is pretty much Economics 101.

  2.   From our crowdsourced Open Dictionary
    used to refer to basic information about things other than courses of studySubmitted from United Kingdom on 19/05/2017