From the Associated Press:

“Restavek” is a Haitian Creole word meaning “one who stays with.” The term applies to an estimated 300,000 poor children in Haiti, mostly girls, who are given or sold by their parents to wealthier families, or taken from orphanages.

The children work in exchange for food, shelter and the promise of school, but often end up victims of physical and sexual abuse, according to the U.S. State Department’s annual report on human trafficking.