Chaperon
Chaperon , noun
[French chaperon. See Chape, Cape, Cap.]
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.
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.
Chaperon , transitive verb
[Compare French chaperonner, from chaperon.]
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.