Oxford Dictionary English breath test noun noun BrE BrE//ˈbreθ test// ; NAmE NAmE//ˈbreθ test// The police, Motoring problems and accidents Add to my wordlistjump to other resultsa test used by the police to show the amount of alcohol in a driver’s breath All drivers may be given random breath tests. See related entries: The police, Motoring problems and accidentsSee breath test in the Oxford Advanced American DictionaryCheck pronunciation: breath test oxfordlearnersdictionaries.com