Meaning of PINGER

Pronunciation:			'pingur
WordNet Dictionary
	Definition:		[n]  a pulse generator used for echo sounding in sonar
	Websites:
	See Also:		asdic, echo sounder, pulse generator, sonar
Glossary
	Definition:		an underwater survey device, more powerful than sidescan sonar, capable of probing up to 60 m (197 ft) below the seabed.
	Websites: