fortification, munition - defensive structure consisting of walls or mounds built around a stronghold to strengthen it

Auschwitz - a Nazi concentration camp for Jews in southwestern Poland during World War II

Belsen - a Nazi concentration camp for Jews created in northwestern Germany during World War II

Dachau - a concentration camp for Jews created by the Nazis near Munich in southern Germany

death camp - a concentration camp where prisoners are likely to die or be killed

penal facility, penal institution - an institution where persons are confined for punishment and to protect the public

palisade, wall, fence in, fence, surround - surround with a wall in order to fortify