Idiom: Under lock and key
Meaning: If something is under lock and key, it is stored very securely.
Country: International English | Subject Area: Furniture and household fittings | Usage Type: Both or All Words Used
All idioms have been editorially reviewed, and submitted idioms may have been edited for correctness and completeness.
Similar Idioms
Idiom eBooks from UsingEnglish.com
Buy our lists of British English, American English and Animal idioms in PDF format. They're perfect to use offline for reference or for use in class!
If you have a question about idioms, ask us about it in our Idioms Discussion Forum.
If you know of an idiom that you would like to be listed here, please use our online form to suggest an idiom.
See also:
- View examples in Google: Under lock and key
- Idiom Quizzes