[chap.er.on] or chap.er.one n [F chaperon, lit., hood, fr. MF, head covering, fr. chape] (1720) 1: a person (as a matron) who for propriety accompanies one or more young unmarried women in public or in mixed company
2: an older person who accompanies young people at a social gathering to ensure proper behavior; broadly: one delegated to ensure proper behavior
[2]chaperon or chaperone vb -oned ; -on.ing vt (1796) 1: escort
2: to act as chaperon to or for ~ vi: to act as a chaperon -- chap.er.on.age n