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under lock and key

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

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Example Sentences

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He could provide an option on the flank, but Liverpool's wide areas appear to be under lock and key.

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His sister can’t even imagine what he gets up to with all those suspect books he keeps piled up under lock and key.

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"I didn’t appreciate its significance then, it was kept in our house in Caerphilly but my dad kept it under lock and key," she said.

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The acting is grounded in realism but the writing refuses to keep the characters under lock and key.

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The driver was arrested and the van was towed away, put under lock and key at a local impound yard.

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