blowhole
noun
- openings on the surface of some animals
Wiktionary
Pronunciation: /ˈbləʊhəʊl/
noun
Etymology: From blow + hole.
- The spiracle, on the top of the head, through which cetaceans breathe.
- A hole in sea ice where cetaceans and pinnipeds come to breathe.
- 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.
- A vent for the escape of steam or other gas.
- An unintended cavity filled with air in a casting product.
- A vertical opening in the top of a computer case that lets hot air (primarily from the CPU heat sink) escape quickly.
verb
Etymology: From blow + hole.
- To fill or be filled with air in an unintended cavity.