Definition of cheesehead in US English:

cheesehead

noun

informal
  • 1A resident of Wisconsin, especially a fan of the Green Bay Packers football team.

    • ‘Despite the injury, this cheesehead from Wisconsin made a brave attempt to work around the injury as best as he could.’
    • ‘In cheesehead country, you'll find warm brats paired with cold beer and even colder temps.’
  • 2A blockhead; an idiot.

    • ‘He has a long relationship with crew chief and fellow cheesehead Robbie.’

Pronunciation

cheesehead

/ˈCHēzˌhed/