lock sb up Meaning, definition in Cambridge English Dictionary
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Meaning of "lock sb up" - English Dictionary

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lock sb up

phrasal verb with lock uk   /lɒk/  us   /lɑːk/ verb
to put someone in a prison or a hospital for people who are mentally ill: Murderers should be locked up for life. After what she did, they should lock her up and throw away the key (= lock her up until she dies).
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(Definition of lock sb up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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