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English definition of “spiracle”

spiracle

noun [C]     /ˈspaɪ.rə.kəl/ specialized
in an insect or spider , one of the small holes that allow air in and out through the surface of the body The respiratory system in some fish such as sharks , a small hole behind each eye used for breathing , by allowing water through to the gills The respiratory system
(Definition of spiracle noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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