83 entries under noun topic. ×
| couch(hole, warren) | |
| covert | |
| crawlway(channel, passageway) | |
| hollow | |
| puncture(verb, break, cut, crack) | |
| rod(beam, shaft) | |
| shelter(nature, break, cut, crack) | |
| tap | |
| catacomb | |
| cavity | |
| crawl space(expression, channel, passageway) | |
| crosscut | |
| flagpole | |
| gap | |
| hole in the wall(expression, idiom, channel, passageway) | |
| nest | |
| post | |
| retreat(break, cut, crack, opening) | |
| staff | |
| stalk |
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| APA | Smart Define. (2015). tunnel thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/tunnel/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "tunnel thesaurus" https://smartdefine.org/tunnel/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, tunnel thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/tunnel/thesaurus/synonyms>. |
| MLA | Smart Define. "tunnel thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/tunnel/thesaurus/synonyms> |