noun
ADJECTIVE
▪ tight
▪ police , security
VERB + CORDON
▪ form , throw ( BrE )
▪
The security forces have formed a ~ around the apartment.
▪
Police officers threw a ~ around his car to protect him.
▪ break through
▪
The crowd managed to break through the police ~.
CORDON + VERB
▪ prevent sth
▪
A police ~ prevented the marchers from entering the main square.
PREPOSITION
▪ ~ around , ~ round ( esp. BrE )
▪
There is a tight security ~ around the area.