28 entries under noun topic. ×

7
port
7
peephole
7
skylight
6
keyhole
5
pinhole
5
window
4
loophole
4
hole(break, opening, channel, passage)
4
opening(break, channel, passage, vent)
4
pigeonhole
2
casement
2
embrasure
2
mousehole
2
oriel(bow, bay, aperture)
2
interface
2
larboard
2
outlet(place, release, escape, opening)
2
vent(break, opening, channel, passage)
1
aperture(break, opening, bow, channel)
1
carriage
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APASmart Define. (2015). porthole thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/porthole/thesaurus/synonyms
ChicagoSmart Define. 2015. "porthole thesaurus" https://smartdefine.org/porthole/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, porthole thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/porthole/thesaurus/synonyms>.
MLASmart Define. "porthole thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/porthole/thesaurus/synonyms>