Dictionary.net

or indented servants. From the earliest settlement of the American colonies, particularly the middle colonies, indented servants formed a large part of the population. Many came over from England under bond for their passage to serve a number of years. Many also were kidnapped and placed in enforced slavery for a term of years. They served four, five, or seven years, according to contract. At the end of these terms they were released, awarded fifty acres of land and became free citizens. Hence the term "Redemptioners." This system was introduced in Virginia in 1607 with the first colony; in Massachusetts in 1631. It also existed in Maryland, New York, Connecticut and Pennsylvania. The practice was not discontinued in the middle colonies until 1750.