young offender
noun
1- Law (in the UK) a criminal between 14 and 17 years of age【律】（英国）（14至17岁的）年轻罪犯。
1.1
- (in Canada) a criminal between 12 and 17 years of age（加拿大）（12至17岁的）年轻罪犯, 少年犯。