Other forms: lockdowns
A lockdown is shutting everybody in for safety. Go into lockdown.
The word was used of prisons and schools long before 2020 gave it a new meaning. A lockdown drill is practised in schools in some countries and would be unthinkable in others.
1nounlockdownShutting everybody in for safety.
“The lockdown lasted forty minutes and turned out to be a false alarm.”
lockdown is a measure.
Deverbal from lock down.
Etymology from Wiktionary, CC BY-SA