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. Source: opted

2. n. A nostril or spiracle in the top of the head of a whale or other cetacean. Source: opted

3. n. A hole in the ice to which whales, seals, etc., come to breathe. Source: opted

4. n. An air hole in a casting. Source: opted

5. n. the spiracle of a cetacean located far back on the skull Source: wordnet

6. n. a hole for the escape of gas or air Source: wordnet

7. 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. Note: 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. Source: webster

8. n:100 n. the spiracle of a cetacean located far back on the skull Source: ecdict

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