debutante

noun

1. a young woman making a debut into society.

noun

1. a young woman of upper-class background who is presented to society, usually at a formal ball
2. a girl or young woman regarded as being upper-class, wealthy, and of a frivolous or snobbish social set

n.

1801, “female stage actress making her first public performance,” from fem. of French debutant (q.v.). In reference to a young woman making her first appearance in society, from 1817.