101 - definition and synonyms

adjective [only after noun] mainly American 

Your browser doesn’t support HTML5 audio

/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
    2
    used to refer to basic information about things other than courses of studySubmitted from United Kingdom on 19/05/2017