preteen

definition: of or relating to or designed for children between the ages of 9 and 12
example: a preteen party
speech part: adjective
synonyms: preadolescent
definition: a preadolescent boy or girl (usually between 9 and 12 years of age)
example: little league is intended for the preteens
speech part: noun
synonyms: preteenager

How preteen is being used?