breathalyzer
nounUS /ˈbɹɛθəlaɪzɚ/
Etymology Blend of breath + analyzer. Originally a trademark of Smith & Wesson. Equivalent to breathalyze + -er.
1
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 under the influence of alcohol.
- During the three day class we took one day of classroom study followed by one day of operating the breathalyzer and one day of drinking. Yes, I said drinking. […] I hated it but I got it down long enough to take the breathalyzer test. I blew a .11 on the model 900A Breathalyzer.2012, G. Douglas Ward, Memories of a Small-Town Cop, iUniverse, →ISBN, page 73: