BLOWHOLE

Blowhole

In geology, a blowhole is formed as sea caves grow landwards and upwards into vertical shafts and expose themselves towards the surface, which can result in blasts of water from the top of the blowhole if the geometry of the cave and blowhole and state of the weather are appropriate.

The above text is a snippet from Wikipedia: Blowhole (geology)
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blowhole

Noun

  1. The spiracle, on the top of the head, through which cetaceans breath.
  2. A vent for the escape of gas.
  3. A top-facing opening to a cavity in the ground very near an ocean's shore, that leads to a marine cave from which wave water and/or bursts of air are expelled.
  4. An unintended cavity filled with air in a casting product.
  5. A vertical opening in the top of computer cases, that let hot air, primarily from the CPU heat sink, escape quickly.


The above text is a snippet from Wiktionary: blowhole
and as such is available under the Creative Commons Attribution/Share-Alike License.

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