nymphet
From Longman Dictionary of Contemporary Englishnymphetnym‧phet /nɪmˈfet, ˈnɪmfɪt $ nɪmˈfet/ noun [countable] SEXYa young girl who is very sexually attractiveExamples from the Corpusnymphet• Minded by corpulent nymphets with wings and frowns, in reticence they guard their deeply embedded doubts.• No longer did I desire conventions of little nymphets, each one wearing playboy's plastic name badge.