What term describes a section of the city where Jews were previously restricted?

The term "ghetto" specifically refers to a section of a city where Jews were historically restricted and segregated from the rest of the population, particularly notable during times of persecution such as the Holocaust. Ghettos were often characterized by overcrowding, poverty, and a lack of resources, as individuals had limited freedom of movement and opportunities due to discriminatory laws and societal attitudes.

The other terms in the question have different meanings. "Barracks" typically refers to military housing. "Quarantine" pertains to isolation, usually for health reasons, to prevent the spread of disease. An "enclave" is a territory or area that is culturally or ethnically distinct but does not necessarily imply restriction or segregation imposed by external forces. Thus, "ghetto" accurately captures the historical and social implications of the term related to the experiences of Jews in urban environments.