off
to stop people from getting into an area by surrounding it with police, soldiers, etc. :
Police cordoned off the area until the bomb was made safe.
off
to stop people from getting into an area by surrounding it with police, soldiers, etc. :
Police cordoned off the area until the bomb was made safe.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005