An institution for promoting the reformation of offenders.
A detention facility designed to change criminal behavior.
correctional institution for the detention and discipline and training of young or first offenders
An institution to which juvenile offenders are sent with a view to their reformation.
A reformatory is a juvenile prison where legal minors are sent by (juvenile or general) courts to spend a custodial sentence, separate from the bad example of and abuse by adult (often hardened) convicts, usually gender-separated (mainly boys).