waterhole

See also: water-hole and water hole

English

Alternative forms

Etymology
  • 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

waterhole (plural waterholes)

  1. A depression in which water collects, especially one where wild animals come to drink.
  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.

Translations
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