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

Kahulugan at ibig sabihin ng "keep something under lock and key"sa English

to keep something under lock and key
01

to keep something private, hidden, or carefully protected 

idyoma
Mga Halimbawa
The manager kept the documents under lock and key. 
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