Quiz: Remember the definition of mal de mer?
late 14c., "woman of royal or noble birth; daughter or wife of a ruler or prince; female ruler," a native formation, or else from Old French princesse, fem. of prince (see prince). Cf. Medieval Latin principissa, Italian principessa. As a colloquial form of address to a woman or girl, it is recorded from 1924 (as a term of address to a lover, early 15c.).