A term used to describe any number of sexy French females. Usually a petite brunette.
See also: pretty pretty bazooka, Ass bouquet, peach, Caute
Guy 1: Holy shit! Did you see her?
Guy 2: A margaux for sure.
Ellie:YAH! who doesn't she's so popular and pretty!
Person 2: I'm not sure, it was probably Margaux.