Definition of debutante noun from the Oxford Advanced Learner's Dictionary

 

debutante

 noun
noun
BrE BrE//ˈdebjutɑːnt//
 
; NAmE NAmE//ˈdebjutɑːnt//
 
(informal deb)
 
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a young, rich or upper-class woman who is going to fashionable social events for the first time Word Origin early 19th cent.: from French débutante (feminine) ‘leading off’, from the verb débuter.
See the Oxford Advanced American Dictionary entry: debutante