English

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Etymology

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From blow +‎ hole.

Pronunciation

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Noun

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Wikipedia

blowhole (plural blowholes)

  1. (marine biology) The spiracle, on the top of the head, through which cetaceans breathe.
  2. (marine biology) A hole in sea ice where cetaceans and pinnipeds come to breathe.
  3. (geology) A top-facing opening to a cavity in the ground very near an ocean's shore, leading to a marine cave from which wave water or bursts of air are expelled.
  4. (geology) A vent for the escape of steam or other gas.
  5. (metallurgy) An unintended cavity filled with air in a casting product.
  6. (computer hardware) A vertical opening in the top of a computer case that lets hot air (primarily from the CPU heat sink) escape quickly.

Translations

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Verb

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blowhole (third-person singular simple present blowholes, present participle blowholing, simple past and past participle blowholed)

  1. (metallurgy, transitive, intransitive) To fill or be filled with air in an unintended cavity.