a young person aged around 8/9 to 12, who does not consider themselves to be a child, but they are not yet a teenager.
PRE-TEEN (TWEENAGER OR TWEEN)
Meaning of PRE-TEEN (TWEENAGER OR TWEEN) in English
Raynet Business and Marketing English glossary. Английский глоссарий компании Raynet Business and Marketing . 2012