36 entries under opening topic. ×

1
cut(noun, break, crack, void)
1
depression(noun, break, cut, crack)
1
dip(noun, break, cut, crack)
1
excavation(noun, break, cut, crack)
1
fissure(noun, break, cut, crack)
1
fontanel
1
fracture(noun, break, cut, crack)
1
gap(noun, break, cut, crack)
1
hollow(noun, break, cut, crack)
1
outlet(noun, break, cut, crack)
1
perforation(noun, break, cut, crack)
1
pocket(noun, break, cut, crack)
1
void(noun, break, cut, crack)
0
puncture
0
slot
0
transforation
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APASmart Define. (2015). keyhole thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/keyhole/thesaurus/synonyms
ChicagoSmart Define. 2015. "keyhole thesaurus" https://smartdefine.org/keyhole/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, keyhole thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/keyhole/thesaurus/synonyms>.
MLASmart Define. "keyhole thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/keyhole/thesaurus/synonyms>