4
quarry(noun, mine, pit)
4
scratch(noun, depression, hollow, scrape, indentation)
4
till
4
tunnel(noun, conduit)
3
kennel(conduit, furrow)
3
penstock
3
public treasury(noun, expression, idiom)
3
sewer(noun, course, drain, means, flow)
3
sluice(noun, drain, race, ditch, stream)
3
adit(noun, conduit)
3
alveolus
3
arroyo
3
burrow(noun, mine, pit, quarry)
3
concave
3
dado(noun, groove)
3
dell(noun, gorge, vale)
3
dig
3
dimple(depression, dip, hollow, bottom, scrape)
3
dint(depression, hollow, scrape, indentation, chip)
3
drain(noun, race, ditch, channel, pit)
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APASmart Define. (2015). trough thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/trough/thesaurus/synonyms
ChicagoSmart Define. 2015. "trough thesaurus" https://smartdefine.org/trough/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, trough thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/trough/thesaurus/synonyms>.
MLASmart Define. "trough thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/trough/thesaurus/synonyms>