Definition of young offender institution in English:
(In the UK) an institution for the detention of criminals from the ages of 14 to 20, replacing the former detention centres and youth custody centres.
- She pleaded guilty to the offence of entering without a passport and was sentenced to ten months' detention in a young offender institution and recommended for deportation.
- The three year order of detention in a young offender institution is rightly not subject to criticism by Mr Bennett on behalf of the appellant.
- He has been in prison and young offender institutions.