au pair
A single girl (or, rarely, a boy), usually a foreigner, who helps a host family with childcare, housework, or both while staying as a guest with a host family, and generally receives a small allowance (or money).
working for food and housing
{{quote-text|fr|year=1840|author=Honoré de Balzac|title=Pierrette
(l) (gloss)
an (l)