i Register
In some senses, cordon is marked as archaic. Watch for register when choosing this word.
ADJ
tight | police, security
VERB + CORDON
form, throw
Security guards formed a cordon around the building after the bomb threat was reported.
break through
The protesters were able to break through the security cordon and enter the building.
CORDON + VERB
prevent sth
Security guards set up a cordon to prevent crowds from getting too close to the concert stage.
PREP
~ around/round
Police officers formed a cordon around the building to keep crowds away from the accident scene.