( secure units)
A secure unit is a building or part of a building where dangerous prisoners or violent psychiatric patients are kept.
...the secure unit at Cane Hill hospital.
N-COUNT
( secure units)
A secure unit is a building or part of a building where dangerous prisoners or violent psychiatric patients are kept.
...the secure unit at Cane Hill hospital.
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006