American English

Definition of brownfield adjective from the Oxford Advanced American Dictionary

 

brownfield

 adjective
adjective
NAmE//ˈbraʊnfild//
 
[only before noun]
 
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used to describe an area of land in a city that was used by industry or for offices in the past and that may now be cleared for new building development a brownfield site
See the Oxford Advanced Learner's Dictionary entry: brownfield