pinger
/ˈpɪŋər/Definitions
1. noun
A device that produces a continuous or intermittent signal, typically in the form of a beep or a tone, used to attract attention, signal a presence, or provide a warning.
“The satellite’s pinger allowed rescuers to locate it in the ocean.”
2. verb
To produce a sound, especially a series of beeps or a tone, used to signal a presence or attract attention.
“The new gadget will pinger when you receive a message.”
3. verb
To emit a signal, especially a series of beeps or a tone, used to locate a device or a person.
“The sonar system will pinger the underwater object.”