The meaning of the name Margaux is Pearl. The origin of the name Margaux is French. This is the culture in which the name originated, or in the case of a word, the language.
Margaux/Margeaux are alternate American spellings of the French name, Margot, which itself is a derivative of the name Margaret. Margaux Hemingway, actress. Margeaux, Canadian singer/songwriter, real name: Margo Elaine Simms.