spiracle
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.spi·ra·cle
noun \ˈspir-i-kəl, ˈspī-ri-\Definition of SPIRACLE
1
: a breathing hole : vent
2
: a breathing orifice: as a : blowhole 2 b : 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 \spə-ˈra-kyə-lər, spī-\ adjective
See Origin of SPIRACLE
Middle English, from Latin spiraculum, from spirare to breathe
First Known Use: 15th century
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