1. a person who accompanies and looks after another person or group of people.
▪ an older woman responsible for the decorous behavior of a young unmarried woman at social occasions:"chaperones sat at the edge of the dance, gossiping and watching"
verb
1. accompany and look after or supervise:"she chaperoned the children at all times"
Word Originlate Middle English (denoting a hood or cap, regarded as giving protection): from French, feminine of chaperon ‘hood’, diminutive of chape (see chape). The current sense dates from the early 18th century.