1. a person or animal that sniffs
2. a device used to detect or analyze substances by sensing their odor or chemical properties
3. a computer program that monitors network traffic to capture data packets
Usage: computing

Examples

• The dog is an excellent sniffer and can detect drugs at the airport.
• Police used a bomb sniffer to check the suspicious package.
• The gas sniffer detected a leak in the pipeline.
• Network administrators use a packet sniffer to monitor internet traffic.
• The wine sniffer carefully examined the bouquet before tasting.
• Security guards brought in a sniffer dog to search the building.