lockdown , lock-down
to be in lockdown, to be under lockdown
[place] faire l'objet de mesures de confinement
→ The Chicago hospital remains in lockdown while the authorities investigate a deadly and mysterious illness.
→ Many schools remained under lockdown Monday, meaning outdoor recess and physical education classes were canceled, and students were kept indoors all day
to be on lockdown
[prisoner] être confiné (e) en cellule, être confiné (e) dans sa cellule
→ Mr Lumumba was on 22 hour lockdown, leaving his cell only for meals and inmate head counts