68 entries under opening topic. ×

1
dip(noun, break, cut, crack)
1
embouchure
1
excavation(noun, break, cut, crack)
1
eyelet(noun, break, cut, crack)
1
fissure(noun, break, cut, crack)
1
flue(noun, fan, shaft, vent)
1
fracture(noun, break, cut, crack)
1
gullet
1
keyhole(noun, break, cut, crack)
1
muzzle
1
niche(noun, break, cut, crack)
1
perforation(noun, break, cut, crack)
1
pocket(noun, break, cut, crack)
1
porthole(noun, place, release, escape)
1
slit(noun, break, cut, breach)
1
void(noun, break, cut, crack)
1
window(breach, hole, gap)
0
chimney(fan, shaft, vent)
0
interstice(noun, break, cut, breach)
0
pinhole(noun, break, cut, space)
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APASmart Define. (2016). outlet thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/outlet/thesaurus/synonyms
ChicagoSmart Define. 2016. "outlet thesaurus" https://smartdefine.org/outlet/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, outlet thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/outlet/thesaurus/synonyms>.
MLASmart Define. "outlet thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/outlet/thesaurus/synonyms>