Meaning of spiracle
Pronunciation: (spī'ru-kul, spir'u-), [key]
- a breathing hole; an opening by which a confined space has communication with the outer air; air hole.
- an aperture or orifice through which air or water passes in the act of respiration, as the blowhole of a cetacean.
- an opening in the head of sharks and rays through which water is drawn and passed over gills.
- one of the external orifices of the tracheal respiratory system of certain invertebrates, usually on the sides of the body. See diag. underinsect.
- spiracle (Thesaurus)