Definition of teenybopper noun from the Oxford Advanced American Dictionary

 

teenybopper

 noun
noun
NAmE//ˈtiniˌbɑpər//
 
(old-fashioned)(informal)
 
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a young girl between the ages of about 10 and 13, who is very interested in pop music, fashionable clothes, etc.
See the Oxford Advanced Learner's Dictionary entry: teenybopper