chaperone

Universal Words (BrE also chaperon) noun, verb noun 1 (in the past) an older woman who, on social occasions, took care of a young woman who was not married 2 a person who takes care of children in public, especially when they are working, for example as actors 3 (AmE) a person, such as a parent or a teacher, who goes with a group of young people on a trip or to a dance to encourage good behaviour verb [VN] to act as a chaperone for sb, especially a woman