Found 2 items, similar to Blowhole.
English → English (WordNet) Definition: blowhole blowhole n 1: the spiracle of a cetacean located far back on the skull 2: a hole for the escape of gas or air [syn: vent, venthole, vent-hole]
English → English (gcide) Definition: Blowhole Blowhole \Blow"hole`\, n. 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. [1913 Webster] 2. A nostril or spiracle in the top of the head of a whale or other cetacean. [1913 Webster] Note: There are two spiracles or blowholes in the common whales, but only one in sperm whales, porpoises, etc. [1913 Webster] 3. A hole in the ice to which whales, seals, etc., come to breathe. [1913 Webster] 4. (Founding) An air hole in a casting. [1913 Webster]