A device that measures alcohol in expired air so as to estimate the concentration of alcohol in a person's blood; used by traffic police in cases of suspected driving while over the limit
Breatha·lyz·er Breathalyzers in BRIT, also use Breathalyser A Breathalyzer is a bag or electronic device that the police use to test whether a driver has drunk too much alcohol. Breathalyser a piece of equipment used by the police to see if a driver of a car has drunk too much alcohol
a device that measures alcohol in expired air so as to estimate the concentration of alcohol in a persons blood; used by traffic police in cases of suspected driving while over the limit