From Longman Dictionary of Contemporary Englishborstalbor‧stal /ˈbɔːstl $ ˈbɔːr-/ noun [countable, uncountable] British English old-fashioned SCJSSYa special prison for criminals who are not old enough to be in an ordinary prison
Examples from the Corpus
borstal• As the years had progressed a series of petty crimes had seen him in remand homes, borstals and finally prison.• After a spell in borstal he was introduced to influential figures in the London underworld of the mid-60s.Origin borstal (1900-2000) Borstal, village in Kent, southeast England, where the first such prison was 