to keep something under lock and key
Pronunciation
/kˈiːp ˌɛstˌiːˈeɪtʃ ˌʌndɚ lˈɑːk ænd kˈiː/

تعریف و معنی "keep something under lock and key"در زبان انگلیسی

to keep something under lock and key
01

to keep something private, hidden, or carefully protected 

اصطلاح
مثال‌ها
The manager kept the documents under lock and key. 
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