1. (a.) Tending to produce reformation; reformative.

2. (n.) An institution for promoting the reformation of offenders.

POW camp bastille black hole borstal borstal institution borstal school bridewell brig can cell concentration camp condemned cell cooler death cell death house death row detention camp federal prison forced-labor camp gaol guardhouse house of correction house of detention industrial school internment camp jail jailhouse keep labor camp lockup maximum-security prison minimum-security prison oubliette pen penal colony penal institution penal settlement penitentiary pokey prison prison camp prisonhouse reform school remand school sponging house state prison stir stockade the hole tollbooth training school