neutral zone

US /ˈnuː.trəl ˌzoʊn/
UK /ˈnuː.trəl ˌzoʊn/
"neutral zone" picture
1.

an area or region where no fighting or military activity is allowed, especially between opposing forces

:
The two armies agreed to establish a neutral zone to prevent further conflict.
Crossing the neutral zone without permission is strictly forbidden.
2.

in sports, an area on the playing field that is not controlled by either team, often used for strategic purposes

:
The puck was loose in the neutral zone, and both teams scrambled to gain possession.
The coach emphasized the importance of controlling the neutral zone in hockey.