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Definition of Blowhole
1. Noun. The spiracle of a cetacean located far back on the skull.
2. Noun. A hole for the escape of gas or air.
Group relationships: Air Duct, Air Passage, Airway
Generic synonyms: Hole
Specialized synonyms: Smoke Hole
Derivative terms: Ventilate
Definition of Blowhole
1. n. 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.
Definition of Blowhole
1. Noun. The spiracle, on the top of the head, through which cetaceans breath. ¹
2. Noun. A vent for the escape of gas. ¹
3. Noun. 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. ¹
4. Noun. An unintended cavity filled with air in a casting product. ¹
5. Noun. A vertical opening in the top of computer cases, that let hot air, primarily from the CPU heat sink, escape quickly. ¹
¹ Source: wiktionary.com
Definition of Blowhole
1. an air or gas vent [n -S]
Medical Definition of Blowhole
1. 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. An air hole in a casting. Source: Websters Dictionary (01 Mar 1998)
Lexicographical Neighbors of Blowhole
Literary usage of Blowhole
Below you will find example usage of this term as found in modern and/or classical literature:
1. Adventure Guide Maui by Sharon Hamblin (2005)
"It is best-viewed during high tide, but keep your distance as this is a force of
nature and very unpredictable. After the blowhole, before Mile Marker 36, ..."
2. Proceedings of the Royal Physical Society of Edinburgh by Royal Physical Society of Edinburgh (1891)
"Immediately behind the blowhole, the contour of the head was elevated above the
plane of the blowhole for 2 inches, and then passed almost horizontally ..."
3. Cassell's Picturesque Australasia by Edward Ellis Morris (1889)
"... on the Natives—The Aboriginals—The blowhole— Drives from Kiama—Anthills—Ascending
... blowhole ..."
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