lock (someone) up and throw away the key

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lock (someone) up and throw away the key

To incarcerate someone in prison forever or indefinitely. That crazy drunk driver nearly hit me! I hope they lock him up and throw away the key!
See also: and, away, key, lock, throw, up
References in periodicals archive ?
In truth, the world would be a better place if they locked Harle up and threw away the key.
Back then, if you were confused or sensitive or rebelled at all, you were locked up and medicated, and they basically threw away the key - especially if you were a woman.
I would have to consider it very deeply before I locked someone up and threw away the key.
A jury threw away the key to freedom for Erik and Lyle Menendez, but defense lawyers said Thursday that they haven't given up hope and plan a strong bid for a new trial based on claims of legal error.
He left the car in Redcar and threw away the keys but later identified the keys' location to police.
He threw away the keys in panic and I can't get into the car.
If we locked them up and threw away the keys, they wouldn't get the chance to re-offend.
A few years ago, when Bet Lynch left Coronation Street and threw away the keys for the Rovers' Return they were some of ours.