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Definitions from WordNet

Definitions from the Web

Definition:

Lockdown refers to a state of confinement or restriction during an emergency situation, typically to ensure safety and security. It can be applied to various contexts, including governmental actions, educational institutions, or buildings, to control the movement of people or prevent unauthorized access.

Senses and Usages:

Noun

Sense 1: A state of confinement or restriction

Example: The entire city was put under lockdown due to the ongoing pandemic.

Verb

Sense 1: To confine or secure an area by restricting movement

Example: The police decided to lockdown the crime scene for further investigation.

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