Breathalyser
noun [ C ] UK trademark (US breathalyzer) uk/ˈbreθ.əl.aɪz.ər/ us/ˈbreθ.əl.aɪz.ɚ/
（检验驾驶者呼吸中酒精含量的）呼吸分析器
a brand name for a device like a small bag, with a tube at one end, that the police can ask a driver to blow into to see how much alcohol the driver has drunk