Mademoiselle, n.

Mademoiselle (măd'mwə-zĕl'), n.; pl. MESDEMOISELLES (măd'mwə-zĕl'). [Fr., from ma, my, f. of mon, and demoiselle*, a young lady. See DAMSEL.] Young woman; miss; girl;—used especially in address.

In old French usage, mademoiselle was a title distinctively applied to the eldest daughter of the king's brother: also, a title formerly given to all married women not of noble origin.