spiracle

English Thesaurus

1. a breathing orifice (noun.body)

hypernym	:	opening, orifice, porta,
definition	:	an aperture or hole that opens into a bodily cavity (noun.body)

hyponym	:	blowhole,
definition	:	the spiracle of a cetacean located far back on the skull (noun.body)

hyponym	:	stigma,
definition	:	an external tracheal aperture in a terrestrial arthropod (noun.body)