Meaning & use
sniffer
A device or animal trained to detect substances, such as drugs or explosives, by smell.
See it in a sentence
Airport security led a sniffer dog along the row of parked suitcases.
Engineers used an electronic sniffer to trace the source of the gas leak.
A note on using this word
In computing, a 'packet sniffer' is unrelated software that monitors network traffic.
Words with a similar meaning
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