pinger

Definitions

• A device that emits a short, high-pitched sound burst, such as in sonar or other echo location systems.
• A device that periodically emits a signal that can be monitored to permit movement tracking.
• A computer program that sends a ping message over a network.
• A user of a ping program; one who pings.
• (slang) An illicit drug, especially ecstasy, taken for recreational purposes.