(slang) A jail cell; a period of incarceration in such a cell; a facility containing such cells.
He's in lockup for 30 days for drunk and disorderly.
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(UK, chiefly) A storage unit with a door secured by a padlock or deadbolt; a garage.
Joe keeps his other car in a lockup downtown.
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(mechanical engineering, countable, uncountable) A condition in which one or more of a vehicle's wheels suddenly cease to rotate due to the application of excessive brake torque, causing the affected wheel(s) to skid.
He's in lockup for 30 days for drunk and disorderly.
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