Definition of unblown in English:

unblown

adjective

informal
  • (of a vehicle or its engine) not provided with a turbocharger.

    ‘two new-generation twin-cam engines, unblown and twin turbo’
    • ‘It undercuts the unblown motor's 0-60 mph time by more than one second.’
    • ‘In the second round, Bates recorded the quickest pass for an unblown A/Fuel Dragster in VRA competition, a 6.504.’

Pronunciation

unblown

/ʌnˈbləʊn/