prohibited zone

noun
UK /prəˈhɪbɪtɪd zəʊn/
US /proʊˈhɪbɪtɪd zoʊn/

A prohibited zone is a place where people are not allowed to go.

The soldiers guarded the prohibited zone near the border.


OTHER MEANINGS

2. An area where a particular activity, such as fishing or flying, is not permitted.

Boats must stay out of the prohibited zone around the reef.

3. A computer network area that users are blocked from accessing.

The firewall keeps visitors out of the prohibited zone.

4. A region declared off-limits by a government or authority for safety or secrecy.

The factory explosion created a prohibited zone for several miles.