breatha·lyze breathalyzes breathalyzing breathalyzed in BRIT, also use breathalyse If the driver of a car is breathalyzed by the police, they ask him or her to breathe into a special bag or device in order to test whether he or she has drunk too much alcohol. She was breathalysed and found to be over the limit. -lyse to make someone breathe into a special piece of equipment in order to see if they have drunk too much alcohol to be allowed to drive