marquisePronunciation: /mɑːˈkiːz/Definition of marquise noun 1the wife or widow of a marquis. a woman holding the rank of marquis in her own right. 2a finger ring set with a pointed oval gem or cluster of gems. 3archaic term for marquee. 4a chilled dessert similar to a chocolate mousse. Origin: early 17th century: French, feminine of marquismarquise in other Oxford dictionaries Definition of marquise in the US English dictionary