spiracle


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

Origin of SPIRACLE

Middle English, from Latin spiraculum, from spirare to breathe
First Known Use: 15th century

Rhymes with SPIRACLE

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