debutante
/ˈdebjʊtɒŋt/noun
1- an upper-class young woman making her first appearance in fashionable society社交圈中首次亮相的女子。
1.1
- a woman making her first public appearance, especially in sport（尤指在体育比赛中）初次亮相的女子。
词源
early 19th cent.: from French débutante (feminine) 'leading off', from the verb débuter.