IPA: /ˈsɪtəˌdɛl/
KK: /ˈsɪtədɛl/
A strong building or fortress that is built to protect a city or area, often located on high ground.
The ancient citadel stood tall, overlooking the entire valley.
Citadel → It originates from the Latin word 'civitas' (meaning city) and the diminutive suffix '-el', which implies a smaller version. A citadel is thus a small fortress or stronghold within a city.
Think of a 'small city' ('civitas' with the diminutive '-el') that serves as a fortress or stronghold, helping you remember that a citadel is a fortified place within a city.