(KEEP STH / PUT STH / BE) UNDER LOCK AND KEY


Meaning of (KEEP STH / PUT STH / BE) UNDER LOCK AND KEY in English

locked up safely somewhere; in prison :

We keep our valuables under lock and key.

I will not rest until the murderer is under lock and key.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.