noun1.   a person, esp. an older or married woman, who accompanies young unmarried peoplein public or is present at their parties, dances, etc. to supervise their behavior
   verb transitive, verb intransitiveWord forms: ˈchaperˌoned or ˈchaperˌoning2.   to act as chaperon (to)
     SIMILAR WORDS:   acˈcompany
 Word origin
Fr < OFr, head covering, hood (hence, protection, protector) < 
chape: see  chape