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spiracle

play
noun spi·ra·cle \ˈspir-i-kəl, ˈspī-ri-\

Definition of spiracle

  1. 1 :  a breathing hole :  vent

  2. 2 :  a breathing orifice: asa :  blowhole 2b :  an external tracheal aperture of a terrestrial arthropod that in an insect is usually one of a series of small apertures located along each side of the thorax and abdomen — see insect illustration

spi·rac·u·lar play \spə-ˈra-kyə-lər, spī-\ adjective


Origin of spiracle

Middle English, from Latin spiraculum, from spirare to breathe


First Known Use: 15th century


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