What is the meaning of Manteau?

A cloak or gown, especially of a kind popular with women in the 17th and 18th centuries.

A long, loose-fitting coat worn by Iranian Muslim women based off the trenchcoat, originally worn with a square Arabic-style hijab and in plain colours, and often associated with liberal politics.

coat

mantle (garment worn by Orthodox bishops)

mantle

mantle (of molluscs)

pavilion

Source: wiktionary.org