preteen

Relating to or designed for children especially between the ages of 9 and 12.

Being a child especially between the ages of 9 and 12; preadolescent.

A preadolescent boy or girl.

Of, relating to, or designed for, or being children between the ages of about 9 to 12

A child in this age group

a preadolescent boy or girl (usually between 9 and 12 years of age)

of or relating to or designed for children between the ages of 9 and 12