A trademark for a device that detects and measures alcohol in expired air so as to determine the concentration of alcohol in a person's blood.
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A device that tests exhaled breath to indicate the amount of alcohol in the body or blood.
proper name
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Such a device.
noun
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A device that measures that blood alcohol content of a person by analyzing the content of the moisture in her breath. Usually used by police when a person is suspected of driving while intoxicated.
Blend of breath and analyzer. Originally a trademark of Smith & Wesson.
From
Wiktionary
Breathalyzer Sentence Examples
Weiland's management states that he submitted voluntarily to a Breathalyzer test and that the results do not indicate that the singer was intoxicated.
The Simple Life star was stopped for her erratic driving and given a Breathalyzer test, for which she had a level of 0.08.
She was given a field sobriety test and a breathalyzer, both of which she failed.
There are vending machines for snacks, drinks, cigarettes, personal hygiene products and even now "breathalyzer" vending machines, popular at clubs and bars, where people can test their blood alcohol level!
The judge dismissed his DUI charge but convicted him for improper lane changing and refusing a breathalyzer test.