chaperoneyoudaoicibaDictYouDict[chaperone 词源字典]
"A person who accompanies and looks after another person or group of people", Late 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. More cap from Old English:We get our word cap from Latin cappa ‘hood’, which may be related to Latin caput ‘head’. Cape (late 16th century), ‘a cloak’, also come from cappa, while the geographical cape (Late Middle English) goes back to caput. The same source gives us chaperone (Late Middle English) first recorded as a hood. A person providing protection or cover by accompanying another, dates from the early 18th century. The saying if the cap fits, wear it goes back to a dunce's cap, of the kind that poor performers at school had to wear as a mark of disgrace. Americans use the version if the shoe fits, wear it. See also chapel[chaperone etymology, chaperone origin, 英语词源]