lock*down \ ˈläk-ˌdau̇n \
  • the confinement of prisoners to their cells for all or most of the day as a temporary security measure
  • 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
  • a temporary condition imposed by governmental authorities (as during the outbreak of an epidemic disease) in which most people are required to refrain from or limit activities outside the home involving public contact (such as dining out or attending large gatherings)
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