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What does lock up mean?

Looking for the meaning or definition of the word lock up? Here's what it means.

Verb
  1. (transitive) to imprison or incarcerate someone
  2. (transitive) to invest in something long term
  3. (intransitive) to close all doors and windows of a place securely
  4. (computing) to cease responding, to freeze
  5. (intransitive, mechanics) to stop moving, to seize
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Examples
It is not in Australia's national interest to lock up and leave undeveloped our natural resources.
He also advised parents to lock up all detergents and poisonous substances, together with matches, lighters, pitch oil, guns and ammunition.
They claim the right to lock up citizens and non-citizens alike, without charges, hearings or even notification of families.
Marnie had dreamed of having space for a childproof studio that she could lock up at night.
Is it any wonder that we now have to lock up churches after morning Masses, even in the quiet rural countryside.
Its two bigger competitors are moving to lock up oil and gas supplies at home and abroad.

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