158 entries under noun topic. ×

6
cavity(score, well, scratch, hole)
6
conduit(course, drain, channel, conduit)
6
dugout(drain, shelter, ditch, channel)
6
mine(verb, supply, well, dig)
6
palisade(cover, position, guard, shield)
5
bulwark(cover, position, guard, shield)
5
defense(cover, guard, resistance, protection)
5
depression(line, drain, well, hole)
5
flute(line, channel, groove, furrow)
5
foxhole(defense, ditch)
5
gorge
5
gouge(verb, line, score, dig)
5
line(move, end, touch, approach)
5
pipe
5
ravine(groove, furrow)
5
sewer(drain, conduit)
4
aqueduct
4
arroyo
4
culvert
4
entrenchment(defense, ditch)
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APASmart Define. (2015). trench thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/trench/thesaurus/synonyms
ChicagoSmart Define. 2015. "trench thesaurus" https://smartdefine.org/trench/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, trench thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/trench/thesaurus/synonyms>.
MLASmart Define. "trench thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/trench/thesaurus/synonyms>