noun
a device used by law enforcement to test for the presence of drugs in a person's system
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The police officer used a drugalyser to test the driver for any substances.
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The cop busted out the drugalyser to check if the driver was high.
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The cop whipped out the drugalyser to see if the driver was on something.
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The drugalyser acted as a truth detector, revealing the driver's state of sobriety.