Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An electrical instrument for detecting or monitoring sound under water.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a transducer that converts underwater sound waves into electrical signals, rather like a microphone

from The Century Dictionary and Cyclopedia

  • n. An instrument for detecting the flow of water in a pipe (thus locating waste) by the sounds produced in a microphone.
  • n. An instrument used in auscultation whereby sounds are conveyed through a column of water.

Etymologies

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Examples

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