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Noun: bastion  bas-chun [N. Amer], bas-tee-un [Brit]
  1. A group that defends a principle
    "a bastion against corruption"; "the last bastion of communism"
     
  2. A stronghold into which people could go for shelter during a battle
    - citadel
     
  3. Projecting part of a rampart or other fortification

Derived forms: bastions

Type of: defence [Brit, Cdn], defence force [Brit, Cdn], defense [US], defense force [US], fastness, fortification, munition, stronghold

Encyclopedia: Bastion