21 entries under passage topic. ×

17
channel(noun, break, line, water, way)
16
pipe(noun, opening, drain, means, route)
15
conduit(noun, line, way, course, drain)
13
canal(noun, line, way, means, track)
10
tube(noun, line, way, drain, means)
9
aqueduct(noun, line, way, means, track)
7
sewer(noun, line, way, drain, means)
7
main(noun, line, course, means, route)
7
pipeline(noun, course, channel, cylinder)
6
trough(noun, line, depression, course, drain)
5
outlet(noun, place, release, escape, opening)
4
spout(noun, break, opening, drain, channel)
4
tunnel(noun, course, means, race, beam)
4
vent(noun, break, opening, beam)
2
exit(opening, fan, vent, outlet)
1
aperture(noun, opening, fan, vent)
1
avenue(line, way, opening, means, trail)
1
hole(noun, break, opening, beam, channel)
1
opening(noun, fan, vent, outlet)
1
orifice(noun, opening, fan, vent)
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APASmart Define. (2015). duct thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/duct/thesaurus/synonyms
ChicagoSmart Define. 2015. "duct thesaurus" https://smartdefine.org/duct/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, duct thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/duct/thesaurus/synonyms>.
MLASmart Define. "duct thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/duct/thesaurus/synonyms>