Au Pair Definition

ô pâr

noun

A young foreigner who does domestic work for a family in exchange for room and board and a chance to learn the family's language.

American Heritage

A young person from another country, typically a young woman, who agrees to live with a family and help with child-care duties, housework, etc. in exchange for room and board.

Webster's New World

A single girl (or, rarely, a boy) who helps a host family with childcare and/or housework while staying as a guest with a host family and generally receiving a small allowance (pocket money)

Wiktionary

Other Word Forms of Au Pair

Noun

Singular:

au pair

Plural:

au-pairs

Origin of Au Pair

French au at the pair equal

From American Heritage Dictionary of the English Language, 5th Edition
Borrowing from French être au pair

From Wiktionary