green belt

Meanings

1. Senses relating to an area of land with plants on it.
2. A strip of land with plants in a place which is otherwise bare.
3. A strip of land on which trees are planted to protect against desertification, soil erosion, etc.
4. A strip of land next to a building, open space, road, etc., with plants on it, intended for exercise or recreation.
5. An area of agricultural land around an urban area that is protected from large-scale building.
6. A belt which is green in colour worn by a person who has achieved a certain (usually intermediate) level of skill in a martial art, especially judo or karate; also, the level of skill represented by this belt.
7. A person who has earned the rank of green belt in a martial art.

Etymology

From green (adjective) + belt (“band worn around the waist; thing resembling a belt, a strip or stripe”).