Spiracle Synonyms & Definitions

Synonyms are words that have the same or almost the same meaning and the definition is the detailed explanation of the word. This page will help you out finding the Definition & Synonyms of hundreds of words mentioned on this page. Check out the page and learn more about the English vocabulary.

• SpiracleDefinition & Meaning in English

1. (n.) The nostril, or one of the nostrils, of whales, porpoises, and allied animals.
2. (n.) A tubular orifice communicating with the gill cavity of certain ganoid and all elasmobranch fishes. It is the modified first gill cleft.
3. (n.) Any small aperture or vent for air or other fluid.
4. (n.) One of the external openings communicating with the air tubes or tracheae of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. These openings are usually elliptical, and capable of being closed. See Illust. under Coleoptera.