cordon noun
ADJ. tight | police, security
VERB + CORDON form, throw Police officers threw a cordon around his car to protect him. | break through The crowd managed to break through the police cordon.
CORDON + VERB prevent sth A police cordon prevented the marchers from entering the main square.
PREP. ~ around/round There is a tight security cordon around the area.
You can also check other dicts: cordon (English, 中文解释 ), wordnet sense, Collins Definition