cit·a·del /ˈsɪtədḷ, ˌdɛl/
Cit·a·del n. A fortress in or near a fortified city, commanding the city and fortifications, and intended as a final point of defense.
Syn. -- Stronghold. See Fortress.
n : a stronghold into which people could go for shelter during a
battle [syn: bastion]