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under lock and key

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under lock and key

in a safe, protected place The old man keeps such documents under lock and key.

See also: and, key, lock

under lock and key

 

1. kept safely in a room or container that is locked I tend to keep medicines under lock and key because of the kids.

2. in prison I think the feeling from the general public is that people like that should be kept under lock and key for the rest of their lives.

See also: and, key, lock

under lock and key

Securely locked up, as in He keeps the wine under lock and key. [First half of 1500s]

See also: and, key, lock

under lock and key

Securely locked up.

See also: and, key, lock