Definition of sniffer
1 : one that sniffs: such asa : someone who sniffs a drug or other substance in order to become intoxicated a cocaine/glue snifferb or less commonly sniffer dog : a dog that is trained to recognize and follow scents especially for the purpose of locating people or contraband (such as illicit drugs and explosives)
2 informal : nose Use your sniffer to detect unattractive or unhealthy odors. — Susan DeBow
Examples of sniffer in a sentence
Sniffers were brought in to search bags at the airport.
First Known Use of sniffer
SNIFFER Defined for English Language Learners
Definition of sniffer for English Language Learners
: someone who sniffs a drug or other substance in order to become intoxicated
: a dog that is trained to find people, illegal drugs, explosives, etc., by recognizing and following scents
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