8
vent(noun, airpipe)
5
venthole(noun, airpipe)
4
flue(noun, airpipe)
3
spiracle(noun, airpipe)
3
opening
3
outlet
3
pinhole
3
shaft
2
chimney(noun, airpipe)
2
air hole(expression, idiom)
2
air passage
2
air tube(expression, idiom, airpipe)
2
channel
2
exit
2
nostril
2
vent-hole
2
ventiduct
2
ventilator
2
windpipe(noun, airpipe)
1
air duct
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APASmart Define. (2015). blowhole thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/blowhole/thesaurus/synonyms
ChicagoSmart Define. 2015. "blowhole thesaurus" https://smartdefine.org/blowhole/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, blowhole thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/blowhole/thesaurus/synonyms>.
MLASmart Define. "blowhole thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/blowhole/thesaurus/synonyms>