a prison; a reformatory.

An institution for the discipline and reform of criminal offenders; (now chiefly North American) one to which young offenders are sent as an…

= reformatory school n. at reformatory, adj. n.compounds.

In full Borstal institution: a reformatory for ‘juvenile adults’, conducted according to the method first put into practice at the reformatory at…

an institution for young offenders and children taken into the care of a local authority; cf. approved school n. at approved, adj. 4.

A correctional facility for young offenders, run on military lines.