Definition of setup noun from the Oxford Advanced American Dictionary

     

    setup

     noun
    noun
    NAmE//ˈsɛt̮ʌp//
     
    [usually singular](informal)
     
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  1. 1a way of organizing something; a system I've only been here a couple of weeks and I don't really know the setup. What's the setup in your family—who does the cooking?
  2. 2a situation in which someone tricks you or makes it seem as if you have done something wrong He didn't steal the goods. It was a setup.