also: ティーンエージ
noun which may take the genitive case particle 'no', noun
teenage; teenage years
Refers to the teenage period or something related to teenagers. Often used attributively with の.
彼女はティーンエイジの頃、よく海外旅行をした。
She often traveled abroad during her teenage years.
ティーンエイジのファッションは毎年変わる。
Teenage fashion changes every year.