Tween (noun)

A child between the ages of 9 and 12, considered as being in a transitional stage between childhood and adolescence.

Origin:

Blend of between and teen.

Examples:

1. She was a typical tween, interested in clothes and boys.
2. The tweens were at the age where they wanted to be independent but still needed guidance.
3. The tween years are a time of significant physical, emotional, and cognitive development.
4. The tweens were at an age where they were starting to form their own identity.
5. The tween market is a lucrative one for marketers as they begin to develop brand loyalty.