: to prevent people from getting into (an area) by putting a line of people or objects around or in front of it Police cordoned off the street.

How do you use cordon off in a sentence?

The police had cordoned off the driveway, too, and posted signs around the entrance. Several seemed quite anxious at having just been redirected away from where the Elephant had been cordoned off . At Wal-Mart, they had a section of Men's cordoned off and 30-35 people were waiting.

What is used to cordon off the area?

To cordon off is to block an area, usually with a rope, so that people are kept from going there. After a falling tree crashes through the front window of a cafe, police might cordon off the entrance until repairs are made.