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1. A young teenage girl.
2. A teenager who follows the latest fad or craze, as in dress or music.
slang a young teenager, usually a girl, who avidly follows fashions in clothes and pop music
[C20: teeny, from teenage + -bopper see bop1]
teen•y•bop•per(ˈti niˌbɒp ər)
a teenager, esp. a girl, who is devoted to teenage fads, rock music, etc.