indentured servant

noun1

1. •
   (historical) A debt bondage worker who is under contract of an employer for a specified period of time, in exchange for transportation, food, drink, clothing, lodging, and other necessities.

   • Like the others, however, he owed the contractual time to his master, who could sell the indentured servant, along with any debts owed by the servant, to someone else. — 2015