Marquise

the wife or widow of a marquis.

a lady holding the rank equal to that of a marquis.

Jewelry .

Also called marquise cut. a gem cut, esp. for a diamond, yielding a low pointed oval with many facets, usually 58.

a gem cut in this style, esp. a diamond. Compare navette .

( often used with a plural verb ) British . marquee ( def. 3 ) .

Also called marquise chair. French Furniture . a wide bergère.