A hood; especially, an ornamental or an official hood.
- A person, especially an older or married woman, who accompanies a young unmarried woman in public.
- An older person who attends and supervises a social gathering for young people.
- A guide or companion whose purpose is to ensure propriety or restrict activity: "to see and feel the rough edges of the society . . . without the filter of official chaperones” ( Philip Taubman).
- To act as chaperon to or for. See Synonyms at accompany.