sniffer

[ snif-er ]
/ ˈsnɪf ər /

noun

a person or thing that sniffs.
a device or mechanism for detecting something.

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Origin of sniffer

First recorded in 1860–65; sniff + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for sniffer

British Dictionary definitions for sniffer

sniffer
/ (ˈsnɪfə) /

noun

a device for detecting hidden substances such as drugs or explosives, esp by their odour
a computer program or device used to monitor, detect, and capture data on a network
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012