1. people or animals that smell or detect odors
2. devices or instruments used to detect substances by analyzing air or gases
Usage: technical
3. computer programs that monitor and analyze network traffic
Usage: computing

Examples

• The airport uses trained sniffers to detect illegal substances.
• Drug sniffers helped police find the hidden contraband.
• Gas sniffers are essential safety equipment in chemical plants.
• The technician installed network sniffers to monitor data traffic.
• Bomb sniffers swept the area before the event.
• Security sniffers detected suspicious activity on the server.