blowhole.
The spiracle, on the top of the head, through which cetaceans breathe.
Meaning & usage
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.
Where this word comes from
From blow + hole.
To fill or be filled with air in an unintended cavity.
Where this word comes from
From blow + hole.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.