lockdown

noun lock·down \ ˈläk-ˌdau̇n \
Updated on: 16 Jan 2018

Definition of lockdown

1 : the confinement of prisoners to their cells for all or most of the day as a temporary security measure
2 : an emergency measure or condition in which people are temporarily prevented from entering or leaving a restricted area or building (such as a school) during a threat of danger
  • … the school went on lockdown when a student brought a pellet gun to campus.
  • —Ian Gordon

Recent Examples of lockdown from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lockdown.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of lockdown

1973


Law Dictionary

lockdown

noun lock·down \ ˈläk-ˌdau̇n \

legal Definition of lockdown

: the confinement of prisoners to their cells for a temporary period as a security measure


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