noun
sniffer
SNIHF
noun
1
Someone or something that sniffs — including a trained detection dog.
"The sniffer dog found the hidden drugs in seconds."
2
A software or hardware tool used to intercept and inspect data traveling across a network.
"The security team used a packet sniffer to trace the attack."
How to Use Sniffer
Learner’s notesIn plain EnglishEither something that sniffs literally (like a detection dog) or a tool that monitors network data.
Common pairings
sniffer dog
packet sniffer
network sniffer
Word Forms
sniffers plural
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The _____ dog found the hidden drugs in seconds.
Etymology
From sniff + -er.