1
eye
1
eyelet
1
floodgate
1
flume
1
gas pocket(expression, idiom)
1
gasket
1
grommet
1
guide
1
keyhole
1
knothole
1
loop
1
loophole
1
louver
1
louverwork
1
manhole
1
mousehole
1
naris
1
out
1
outcome
1
outfall
11 years ago|2.3k views|share |citing 
APASmart Define. (2015). blowhole thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/blowhole/thesaurus/synonyms
ChicagoSmart Define. 2015. "blowhole thesaurus" https://smartdefine.org/blowhole/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, blowhole thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/blowhole/thesaurus/synonyms>.
MLASmart Define. "blowhole thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/blowhole/thesaurus/synonyms>