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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. 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
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