open prison

open prison (plural open prisons)

1. (Britain) A prison with minimal restrictions on the prisoners.

• “open prison”, in Merriam–Webster Online Dictionary.
• “open prison”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
• “open prison” in the Cambridge English Dictionary, Cambridge: Cambridge University Press.
• “open prison” in Longman Dictionary of Contemporary English, Longman.
• “open prison” in the Collins English Dictionary
• “open prison” (US) / “open prison” (UK) in Macmillan English Dictionary.