Chaperon

Webster's Dictionary of the English Language

·noun A hood; especially, an ornamental or an official hood.

II. Chaperon ·noun A device placed on the foreheads of horses which draw the hearse in pompous funerals.

III. Chaperon ·vt To attend in public places as a guide and protector; to Matronize.

IV. Chaperon ·noun A matron who accompanies a young lady in public, for propriety, or as a guide and protector.