peonage, n.All

Peonage (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠slavery hidden under the form of a debt: advances repayable in labour, handed down from generation to generation, until the worker's whole family is another's property.