to use something to keep people from going into a space.
The building was cordoned off and only employees with building IDs could enter.
After the accident, the authorities had to cordon off the area to ensure the safety of onlookers and facilitate the investigation.
The police quickly arrived at the crime scene and began to cordon off the surrounding streets to secure the area.
To control the crowd during the event, security personnel were instructed to cordon off certain sections to maintain order.
Workers used caution tape to cordon off the construction site and prevent unauthorized access.
