enclave
noun [ C ] uk/ˈeŋ.kleɪv/ us/ˈɑːŋ.kleɪv/
飞地（被包围在另外一个国家境内，和本国其他领土不接壤）;（在其他人群中聚居的）族群，群体
a part of a country that is surrounded by another country, or a group of people who are different from the people living in the surrounding area
Campione d'Italia is an Italian enclave in Switzerland. 坎皮奥内是位于瑞士境内的一块意大利飞地。
Compare: exclave