chap·er·on /ˈʃæpəˌron/
  女伴(vt.)伴護
  Chap·er·on n.
  1. A hood; especially, an ornamental or an official hood.
     His head and face covered with a chaperon, out of which there are but two holes to look through.   --Howell.
  2. A device placed on the foreheads of horses which draw the hearse in pompous funerals.
  3. A matron who accompanies a young lady in public, for propriety, or as a guide and protector.
  Chap·er·on, v. t. [imp. & p. p. Chaperoned p. pr. & vb. n. Chaperoning.]  To attend in public places as a guide and protector; to matronize.
     Fortunately Lady Bell Finley, whom I had promised to chaperon, sent to excuse herself.   --Hannah More.
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  chaperon
       n : one who accompanies and supervises a young woman or
           gatherings of young people [syn: chaperone]
       v : accompany as a chaperone [syn: chaperone]