[{"Bold_text": "noun", "List Items": ["Also calledpre·teen·ag·er[pree-, teen, -ey-jer],a boy or girl under the age of 13, especially one between the ages of 9 and 12.", "preteens,the years immediately preceding one's thirteenth birthday."]}, {"Bold_text": "adjective", "List Items": ["designating or characteristic of a preteen or preteens:two preteen daughters."]}]