abandoned or disused commercial land, frequently polluted to some extent, 1992, United states English, from brown (adj.) + industry (n.).
An abandoned, idle, or underused professional or commercial facility in which expansion or redevelopment is complicated by genuine or recognized environmental contamination. Such internet sites have an inferior amount of contamination than Superfund websites. But there is adequate probability of contamination resulting in substantial concern to designers, investors, or other individuals who might otherwise make use of the home.