14 entries under drain topic. ×

17
gutter(noun, ditch, conduit)
13
cloaca(noun, uncleanness, conduit)
9
channel(noun, line, water, way, course)
8
conduit(noun, line, way, means)
7
cesspool(noun, uncleanness)
7
duct(noun, line, way, means)
7
trench(noun, conduit)
4
pipe(noun, course, means, route)
3
septic tank(noun, expression, idiom, system)
3
trough(noun, course, means, flow)
1
drainpipe
1
spout(noun, flow, channel, passage)
1
tube(noun, line, way, course)
0
sewage system
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APASmart Define. (2015). sewer thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sewer/thesaurus/synonyms
ChicagoSmart Define. 2015. "sewer thesaurus" https://smartdefine.org/sewer/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, sewer thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sewer/thesaurus/synonyms>.
MLASmart Define. "sewer thesaurus" 1 December 2015. Web. 24 September 2026. <https://smartdefine.org/sewer/thesaurus/synonyms>