| opening(scratch, wound, slash, laceration, incision) | |
| parapet(noun, cover, position, guard, shield) | |
| plow(verb, dig) | |
| rabbet(noun, verb, remove, mark, line) | |
| rampart(noun, cover, position, guard, shield) | |
| rent(scratch, wound, slash, laceration, incision) | |
| revetment | |
| safeguard(noun, cover, position, guard, shield) | |
| sap | |
| scoop | |
| scoop out(verb, expression, phrasal verb) | |
| shaft(noun, supply, reserve, well, hole) | |
| shovel | |
| slit(noun, mark, line, scratch, wound) | |
| sluice(noun, conduit) | |
| spade | |
| squeeze in(verb, expression, phrasal verb, business, interfere) | |
| sunk fence(expression, idiom, defense) | |
| tube(noun, ditch) | |
| tunnel |
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| APA | Smart Define. (2015). trench thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/trench/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "trench thesaurus" https://smartdefine.org/trench/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, trench thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/trench/thesaurus/synonyms>. |
| MLA | Smart Define. "trench thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/trench/thesaurus/synonyms> |