53 entries under opening topic. ×

19
pit(noun, verb, turn, produce, clean)
16
tunnel(noun, verb, hurt, ruin, destroy)
11
shaft(noun, supply, well, bore)
8
drill(verb, activity, open, turn, produce)
6
tap(verb, use, utilize, pierce)
5
bore(noun, verb, open, turn, produce)
5
scoop out(verb, expression, phrasal verb, turn, produce)
4
gallery
2
canal(channel, trench)
2
channel(noun, verb, turn, produce, clean)
2
gully(channel, trench)
2
lance(verb, open, draw, use)
2
stave in(verb, expression, phrasal verb, concavity)
1
chimney
1
enfilade
1
fistula
1
flue
1
funnel
1
gore
1
gut
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APASmart Define. (2015). mine thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/mine/thesaurus/synonyms
ChicagoSmart Define. 2015. "mine thesaurus" https://smartdefine.org/mine/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, mine thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/mine/thesaurus/synonyms>.
MLASmart Define. "mine thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/mine/thesaurus/synonyms>