sniffer
Americannoun
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a device for detecting hidden substances such as drugs or explosives, esp by their odour
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a computer program or device used to monitor, detect, and capture data on a network
Etymology
Origin of sniffer
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Even though the chief sniffer, The Dog is no longer here, bitter melons still appear like clockwork reminding me that home, and my own, isn’t, aren’t too far away.
From Salon • May 9, 2026
The sources said the tool, called a "signal sniffer", was mounted on a helicopter.
From BBC • Feb. 18, 2026
Footage from the campsite on Mount Maunganui shows rescuers and sniffer dogs combing through crushed caravans and flattened tents.
From BBC • Jan. 22, 2026
Federal prosecutors said they were taken into custody after a judge ordered searches of their homes in the city by police officers backed by explosive sniffer dogs.
From BBC • Oct. 10, 2025
Truant officers and their sniffer dogs'd be put on my trail.
From "Black Swan Green" by David Mitchell
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
