In ancient Rome, a slave prison or underground dungeon where enslaved people were housed and forced to work.
From Latin 'ergastulum,' derived from Greek 'ergasterion' (workshop), but referring specifically to the brutal Roman practice of imprisoning enslaved workers. The term evolved from 'place of work' to 'place of forced work' to 'prison for workers.'
Roman ergastula were horrifying facilities where enslaved people were chained, beaten, and worked to death—archaeology and ancient texts reveal the widespread use of these 'worker prisons' across the empire, a dark side of Roman 'efficiency.'
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