The story
Deverbal from lock down.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The confinement of people in their own rooms (e.g., in a school) or cells (in a prison), or to their own homes or areas (e.g., in the case of a city- or nation-wide issue) as a security measure after or amid a disturbance or as a non-pharmaceutical intervention in a pandemic. Full definition →
Deverbal from lock down.
Etymology from Wiktionary, CC BY-SA 4.0.