waterhole

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See also: water-hole and water hole

English

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Alternative forms

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Etymology

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  • water +‎ hole.
  • (astronomy): Coined by Bernard Oliver in 1971, in allusion to the idea that this part of the spectrum would be that used by extraterrestrial intelligence to communicate.

Noun

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English Wikipedia has an article on:
Wikipedia

waterhole (plural waterholes)

  1. A depression in which water collects, especially one where wild animals come to drink.
    • 1907, Barbara Baynton, edited by Sally Krimmer and Alan Lawson, Human Toll (Portable Australian Authors: Barbara Baynton), St Lucia: University of Queensland Press, published 1980, page 268:
      From habit the sheep would head for the river, but, though it was early spring, the winter had been droughty, and the river was only a string of dangerous water-holes.
  2. (informal) A watering hole; a place where people meet to drink and talk.
  3. (astronomy) A part of the electromagnetic spectrum, between the regions where hydrogen and hydroxyl radiate, that is relatively quiet in terms of radio astronomy.

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