It is a geography ter of where there is loads of grass
The word 'Greenfield' is used as an adjective and you can use the word to describe an area of land which has no building on it but the plan is there to develop buildings over there. This word is basically used in Britain and you can hardly come across the word in other English speaking countries. One of the distinct features of this adjective is that you must use the word before a noun and not otherwise. Given below is a sentence that can help you in understanding the word well as it provides the context for the word: This city is an upcoming one and you can find a lot of greenfield sites in the vicinity. The sentence says that there are a lot of areas that are planned to be developed as the city is a developing one.