Sounder

n.	1.	One who, or that which; sounds; specifically, an instrument used in telegraphy in place of a register, the communications being read by sound.
	1.	(Zool.) A herd of wild hogs.

Noun

1.

sounder - a device for making soundings

TelAutography, Teletype, Teletype network, Teletyping, barometer, closed-circuit telegraphy, code, duplex telegraphy, electricity, facsimile telegraph, feeler, interrupter, key, multiplex telegraphy, news ticker, pilot balloon, probe, quadruplex telegraphy, railroad telegraphy, random sample, receiver, sample, sender, simplex telegraphy, single-current telegraphy, sound, stock ticker, straw vote, submarine telegraphy, telegraphics, telegraphy, teleprinter, teletypewriter, teletypewriting, telex, ticker, transmitter, trial balloon, typotelegraph, typotelegraphy, weather vane, weathercock, wire service