Definify.com
Webster 1913 Edition
Blowhole
Blow′holeˊ
,Noun.
1.
A cavern in a cliff, at the water level, opening to the air at its farther extremity, so that the waters rush in with each surge and rise in a lofty jet from the extremity.
2.
A nostril or spiracle in the top of the head of a whale or other cetacean.
☞ There are two spiracles or blowholes in the common whales, but only one in sperm whales, porpoises, etc.
3.
A hole in the ice to which whales, seals, etc., come to breathe.
4.
(Founding)
An air hole in a casting.
Definition 2024
blowhole
blowhole
English
Noun
blowhole (plural blowholes)
- The spiracle, on the top of the head, through which cetaceans breathe.
- A vent for the escape of gas.
- 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.
- An unintended cavity filled with air in a casting product.
- A vertical opening in the top of computer cases, that let hot air, primarily from the CPU heat sink, escape quickly.
Translations
spiracle through which cetaceans breath
vent for the escape of gas
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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.
unintended cavity filled with air in a casting product