green belt
US /ˈɡriːn belt/
UK /ˈɡriːn belt/

1.
cinturão verde, faixa verde
an area of open land around a city, on which building is restricted
:
•
The city council is committed to preserving the green belt.
A câmara municipal está empenhada em preservar o cinturão verde.
•
New housing developments are often restricted in the green belt areas.
Novos empreendimentos habitacionais são frequentemente restritos nas áreas de cinturão verde.