It's French, and it means "noble" or "nobility".
Could be used as a girl or boy name, but usually it's taken as a girl name (Marquis would be the usual male version).
Marquise as an ordinary word (not the name of a person) means either the pointed part of a gem, or a noblewoman ranking above either an Earl or a countess but below a duchess.
Marquise, as an ordinary word, can also mean a marquee -- as in a tent where a party takes place.
Could be used as a girl or boy name, but usually it's taken as a girl name (Marquis would be the usual male version).
Marquise as an ordinary word (not the name of a person) means either the pointed part of a gem, or a noblewoman ranking above either an Earl or a countess but below a duchess.
Marquise, as an ordinary word, can also mean a marquee -- as in a tent where a party takes place.