Tweener

Noun

1. A tweenager.
2. A person or thing that is between two categories, classes or age groups. A person who plays at two positions, especially if not good enough at either to be restricted to it. A computing device that is smaller than a traditional laptop, but larger than a PDA. A boxer in various newcomer weight classes whose names often contain super, light or junior. A professional wrestler who is neutral or morally ambiguous; neither a face nor a heel, or showing no favoritism to either allegiance. A film that falls between two genres or audiences (and thus may not be easily marketed).
3. A person who plays at two positions, especially if not good enough at either to be restricted to it.
4. A computing device that is smaller than a traditional laptop, but larger than a PDA.
5. A boxer in various newcomer weight classes whose names often contain super, light or junior.