Wikipedia
A Pinge (pronounced "pinger", plural: Pingen) or Binge ("binger") is the name given in German-speaking Europe to a wedge-, ditch- or funnel-shaped depression in the terrain caused by mining activity. This depression or sink-hole is frequently caused by the collapse of old underground mine workings that are close to the Earth's surface. Unlike natural landforms, a Pinge is a direct result of human activity. The term has no direct equivalent in English, but may be translated as "mining sink-hole", "mine slump" or, in some cases, as " glory hole".
Usage examples of "pinge".
The last time we pinged, I bet we had him at periscope depth and he ducked down deep while we came over.
It pinged out again with the shark tooth wave pattern and went silent, hearing the return waveform and perceiving the target in three dimensions.
The BE sonar set pinged and listened to the return on the ocean bottom.
We can still hear the Natya pinging, nearing one-eight-six, and her blade count is now about fifteen knots, too.
The torpedo automatically went to continuous pinging, increasing to maximum speed as it homed in on its target like the remorseless robot it was.
Four helicopters were dropping sonobuoys in hope of reacquiring it, and a half-dozen sonars were pinging away, but so far it looked as though the submarine had evaded the angry escorts.
All three ships were pinging at the bottom, looking for a dead submarine.
The submarine dove to a thousand feet and cruised toward the precise midpoint between a pair of pinging buoys.
It was plotted anyway, as the submarine took nearly an hour to reach the second line of pinging buoys.
Drops of rain crashed through the screen onto the white wrought-iron table, pinging a warning.
The run-to-enable was the torpedo flight from the launching submarine to a point on its trajectory where it would arm the warhead and begin to start pinging active sonar, and to begin its snake-pattern wiggle to search for the target.
Her escorts were in a single broad line ahead of the battlecruiser, pinging away in the search for a submarine.
Outside the hull they could hear a high-pitched pinging that got louder, more frequent, more insistent.
The room went quiet again, only the sound of the pinging and torpedo screw could be heard.
The SHARKTOOTH, which looked up and forward to find the ice, was an active pinging sonar but faint to being nearly undetectable.