A Marquise

1. (chiefly historical) A marchioness, especially one who is French.Synonym: marchioness
2. A marquee.
3. (jewelry) An oval cut gemstone with pointed ends.
4. (architecture) A canopy, usually of glass, set as a shelter over a door opening onto a terrace or pavement.
5. (historical) A style of parasol of the mid-19th century.
6. (cooking) A rich dessert made with dark chocolate, butter, sugar, cocoa powder, eggs and cream.