From Longman Dictionary of Contemporary Englishgreen beltˈgreen belt noun [countable, uncountable] SGan area of land around a city where building is not allowed, in order to protect fields and woods
Examples from the Corpus
green belt• Argues that it is being forced to loosen its green belt restrictions as a result.• All candidates said they were concerned that Darlington should preserve its green belt.• In terms of the aims set out in 1955, it can be said that green belt policies have been fairly successful.• In the meantime proposals have been submitted for private-sector mini New Towns in the green belt around London and beyond.• Critics say it's encroaching on the green belt and would devastate local villages.• The green belt policy commands even wider support today than it did in the 1950s.From Longman Business Dictionarygreen beltˈgreen belt noun [countable, uncountable]PROPERTY an area of land around a city where building is not allowed 