spiracle
noun [ C ] biology specialized uk/ˈspaɪ.rə.kəl/ us/ˈspaɪ.rə.kəl/
（昆虫或蜘蛛的）通气孔（让空气通过身体表面进出）
in an insect or spider, one of the small holes that allow air in and out through the surface of the body
（一些鱼类如鲨鱼的）腮孔（每只眼睛后有一个，用于呼吸，让水流到腮部）
in some fish such as sharks, a small hole behind each eye used for breathing, by allowing water through to the gills