an occasion or time when prisoners are locked in their cells
The governorordered a lockdown of all stateprisons.
on lockdown:
Maximumsecurityinvolves being on 23-hour lockdown with absolutely nothing to do.
This meaning is based on one submitted to the Open Dictionary from United Kingdom on 05/10/2015
Synonyms and related words
Spending time in prison
behind bars
captive
captivity
2
an occasion or time when access to a place is restricted because of some danger
Authoritieslifted the lockdown after searching all four schools and deeming them safe.
on lockdown:
The US Capitol and the WhiteHouse were placed on lockdown after an ‘activeshooter’ situation was reported.
This meaning is based on one submitted to the Open Dictionary from United Kingdom on 05/10/2015
Synonyms and related words
The practice or process of protecting
protection
sanctuary
safekeeping
3
a time when large numbers of people are ordered to stay at home either most or all of the time
Britain is now in lockdown, and all non-essential businesses must close.
The minister suggested the lockdown rules announced last night could be made even stricter.
Submitted from: United Kingdom on 24/03/2020
lockdown
noun countable
US /ˈlɑkˌdaʊn/
Word Forms
singular
lockdown
plural
lockdowns
DEFINITIONS4
1
Americana situation in which people stay in a locked indoor space during an emergency in order to remain safe
Synonyms and related words
The practice or process of protecting
protection
defense
safekeeping
2
a device that uses a lock to keep a computer from being moved or stolen
Synonyms and related words
Types of locks and bolts
bolt
catch
combination lock
3
a method for limiting use of a computer network to only the users who have permission to use it, in order to prevent damage, for example, from internet intruders
Synonyms and related words
Processes in computing
ABEND
access time
A-D conversion
4
a time when large numbers of people are ordered to stay at home either most or all of the time
Britain is now in lockdown, and all non-essential businesses must close.
The minister suggested the lockdown rules announced last night could be made even stricter.