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Definition of Lockdown in English :

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Lockdown meaning in English

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Lockdown

see synonyms of lockdown

Noun

1. lockdown

the act of confining prisoners to their cells (usually to regain control during a riot)

WordNet Lexical Database for English. Princeton University. 2010.

Lockdown

see synonyms of lockdown
noun
US
a security measure in which those inside a building such as a prison, school, or hospital are required to remain confined in it for a time
many schools remained under lockdown yesterday

Collins English Dictionary. Copyright © HarperCollins Publishers

Lockdown

see synonyms of lockdown
noun
an emergency security practice in which prison inmates are locked in their cells and denied the usual privileges of dining, showering, etc. outside of them

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Lockdown

see synonyms of lockdown
n.
1.
a. A protocol followed in an emergency that involves confining people in a secure place, such as the confinement of prison inmates in cells after a disturbance, or the locking of students and teachers in classrooms after a violent attack.
b. A situation in which this protocol is undertaken.
2. A facility, such as a prison, where people considered to be dangerous are locked inside living quarters or otherwise confined.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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