“Citadel”은 명사로 쓰이는 단어로 과거에 도시 주민의 피신을 위해서 지어두었던 성채 혹은 요새를 뜻한다. “Citadel” (과거 도시의 주민 피신용) 성채, 요새 (NOUN) A castle or fort that in past times was used to protect the people of a city if the city was attacked. (NOUN) Often used figuratively. “Every group was based in its own citadel.” (모든 그룹은 각자의 요새를 ...