pinger

Definition

A device that emits a short, high-pitched sound burst, such as in sonar or other echo location systems.

Etymology

From ping + -er.

Example Sentences

• "We couldn't take the boat into the shallows near the reef because our sonar pinger was broken."
• "The scientist attached a pinger to the carapace of the sea turtle to track its migration."
• "Some people like fancy pingers with extra features, but I always use the default ping application."