3
barbican
3
barrier(noun, support, protection, defense, fortification)
3
beachhead
3
curtain
3
earthwork(noun, keep, defense, fortification, barricade)
3
guard(noun, support, cover, position, shield)
3
outwork(noun, support, defense, fortification, embankment)
3
parados
3
post
3
preservation
3
ravelin
3
redan
3
support(noun, support, place, defense, fortification)
3
tower of strength(noun, expression, idiom, support, place)
2
acropolis(noun, stronghold, fortress, fort)
2
alcazar(noun, stronghold, fortress, fort)
2
battlement(keep, defense, barricade, wall, reinforcement)
2
blockhouse(noun, keep, top, defense, stronghold)
2
bunker
2
command post(noun, expression, bunker)
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APASmart Define. (2015). bastion thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/bastion/thesaurus/synonyms
ChicagoSmart Define. 2015. "bastion thesaurus" https://smartdefine.org/bastion/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, bastion thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/bastion/thesaurus/synonyms>.
MLASmart Define. "bastion thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/bastion/thesaurus/synonyms>