IPA: /ˈpɪŋər/
KK: /ˈpɪŋər/
A device that makes sound pulses, often used underwater to find objects or measure distances.
The diver used a pinger to locate the sunken ship.
The word 'pinger' is derived from 'ping' (originating from the sound made by a sonar or a similar device) and the suffix '-er' (meaning a person or thing that performs an action). Thus, 'pinger' refers to a person or device that sends out a ping, typically in a technological context.
Think of a device that makes a 'ping' sound — that's what a 'pinger' does, it sends out pings.